I don't see alot of actions films, but I thought it was REALLY entertaining after the first 30 minutes, like the original Matrix. Much better than the half-witted Avatar. And it's one of those movies that's worth seeing on the big screen to get the full effect.
Even if you fully accept the script writer's world, though, hoo boy, there were a few major failures of logic. Oh well, I don't think it's worth spending too much time dissecting. I'd definitely recommend.