Amazingly enough I went into this movie thinking it would be complete crap because of JCVD and Dolph "I can't act" Ludgren, but it was much better than a lot of other action movies, including Terminator: Salvation.
A lot of people might be hesitant because of the conflicting reviews, but ignore the whole "This is bad because it has Jean Claude in it..." stigma and you might be as surprised as I was after watching it. In fact, I found myself watching it a few times again because, through and through, it's an extremely engaging film.
What actually shocked me is that it covers an important social issue of terrorism versus political tyranny; using terrorism to maintain (and gain) freedom as well as capitalist control of armies without nations. Yeah, it's a movie that actually covers something important about sociality.
As a lot of other people pointed out, though, Jean Claude and Dolph only lend their faces for brief (in Dolph's case) and extended (in Jean's case) cameos. This film is not really about the aging action heroes but rather, they play a part in the outcome of things, very similar to Snipe's role in Blade 2.
As for quality...the movie is shot to look like the Bourne Identity and even has a cool chase scene like it, too. All the action is depicted with startling realism and all fist-fights result in such because people either run out of ammo or get too close to use weapons. In other words, all the fight scenes in this movie make a heck of a lot of sense and are very realistic and practical. Added to this, the musical score is extremely fitting to the science-fiction overtones.
Overall, this movie is leaps and bounds better than every other Universal Soldier movie made before it and actually takes itself serious enough to deserve better praise than what it's been receiving.