Terminator Salvation begins with a title sequence that displays the film’s title twice. I know you shouldn’t judge a book by its cover and all that, but somehow it just doesn’t bode well.

However, I was somewhat surprised — after the mass of negative reviews — to discover that I quite liked Terminator Salvation. Sacrilege! But, let’s see if I can explain why…

I’ll begin with the most obvious potential flaw (other than the very concept of continuing the Terminator franchise without James Cameron, that is): director McG, he of the two risible Charlie’s Angels films. Oh dear. But it turns out he’s a surprisingly good director — he certainly does better work than the cheap hack job Jonathan Mostow made of Terminator 3. I doubt everyone agrees on this point, but whatever else you may wish to say about McG, he knows how to put an action sequence together. Most of the time. There’s still some shaky-cam business and very fast cuts, but the sense of geography and what’s actually happening is largely maintained.

This is helped by two things: one, that several sequences involve Giant Robots that benefit from very wide, often aerial, shots to show them off; and two, the apparent inspiration of Children of Men’s long-take action sequences. McG doesn’t quite have Alfonso Cuarón’s conviction in maintaining the single shot for an entire sequence, but he does use it for significant chunks. That said, the latter sometimes backfires. Early on the film feels a bit like watching someone else play a first person shooter, compounded by McG’s habit of sticking with one character throughout sequences that could benefit from a wider perspective, for example Connor’s helicopter crash. That said (again), I’m a little torn what to think of that example: keeping the camera on Connor produces an unusual spin on a potentially familiar sequence, but it’s also a bit disorientating and, as I say, compounds this sense of watching someone else play a game.

Story wise, I thought it fared fairly well. The tale of how John Connor came to meet Kyle Reese and become leader of the resistance wasn’t exactly begging to be told, but if you’re going to continue the franchise into post-Judgement Day future war territory it was probably the best place to start. Terminator 3 proved that the narrative of Arnie/any other Terminator coming back to our present to save Connor/prevent Judgement Day wasn’t in need of reheating again, so it’s also nice to be presented with a slightly more original story within the same universe.

It’s not all fine and dandy though: the behind-the-scenes issues you may have heard about are fitfully apparent on screen, with occasional awkward jumps or half-thought-out developments that smack of an unfinished script or compromised edit. Some of the dialogue’s pretty poor too — considering it starts off pleasantly economical, it’s a shame when characters begin uncomfortably stating the obvious as it wears on.

And even if you hadn’t seen it on the box or heard about it in all the film’s publicity, it’s obvious pretty early on that Marcus Wright will turn out to be a Terminator. To McG’s credit, he plays the ultimate reveal quite well — for those who know, it just about functions as a scene in its own right; for those who still hadn’t guessed, it works as a reveal — but if any filmmaker genuinely thought they’d kept it covered up they were sorely mistaken, and the first half could’ve done with a more knowing rewrite to compensate. Or just delete the prologue.

Littered throughout are numerous nods to the franchise’s history, some of which occur quite naturally, others that feel shoehorned in. I suppose it kept some people happy. The same can be said of the action sequences, though one of the most forced — an attack by a random Giant Robot on an abandoned gas station our heroes only happen to have stopped at — also turns out to be one of the best. Others though, like John Connor taking out a Moto-Terminator with a bit of rope, are more “wouldn’t that be cool to see?” than logical behaviour in the context of the story.

There’s not much for the cast to do either, with a multi-pronged story that leaves everyone feeling short changed. Christian Bale growls a bit and occasionally looks Meaningful as John Connor. At least he doesn’t use his Batman voice. His part was artificially boosted following the star’s casting, which dilutes the focus from where it should be: Marcus Wright, played by the new Colin Farrell (i.e. he’s being cast in everything based on the fact someone said he was The Next Big Thing), Sam Worthington. He’s fine as ever, though his accent seems to waver between American and his native Australian. The same can’t be said of Helena Bonham Carter’s brief turn — her voice hits a constant fake American. Meanwhile, Arnie’s digitised cameo is just that. On the one hand it’s a nice touch, on the other it’s ultimately pointless — Connor doesn’t even react to the familiar face.

Bryce Dallas Howard is severely underused as Kate Connor; one wonders if her part was massively cut back at some point, or if she was just tempted by an exceptionally good payday — considering she usually appears in smaller, better-regarded films, an almost non-existent role in a blockbuster seems an odd choice. That said, she did the same thing in Spider-Man 3 and has since plumped for a role in the Twilight exploitative moneymaker series, so I guess my analysis of her career choices is off.

Finally, then, what of the Director’s Cut? I’ve not seen the theatrical so can’t comment myself, but the changes are few and most are ultimately insignificant. There’s a thorough, illustrated list here. Perhaps the most interesting thing (and you’ll see how I meant that loosely) about the newer cut is what it once again shows about the differences between the UK and the US: over here, it retained its theatrical 12 certificate when extended by just under three minutes to include ever-so-slightly more violence and the briefest of brief nudity; in the US, that bumped it up to an R.

More interesting than these slight tweaks is the behind-the-scenes story of a very different film, which I alluded to earlier. I don’t want to discuss it at length, but this article does. Would that have made for a better film? Christ knows. I wouldn’t count on it. Probably not, even. But it is interesting.

It’s not popular to like Terminator Salvation, that’s for certain, and I suppose it depends what you expect from the film. Is it the equal of the first two genre-definers? No. Is it better than the rehashed hack-directed third? Yes. Did I actually enjoy it? You know what, I did; and considering the reviews had me expecting to hate its poorly-made guts for just about every reason under the sun, it turns out that’s a good result.

Terminator Salvation begins on Sky Movies Premiere today at 10am and 8pm, and is on every day at various times until Thursday 9th September.