Some will give it a negative review because it's been in minor development hell. It wasn't at the point of Deus Ex or Duke Nukem, but it was a cover story on Game Informer at least four years ago, and then it was downsized from a retail release to an arcade release. I also think I heard, but can't swear to it, that a lot of the game was redone at some point.
Fair or not, some people are bound to rate it badly.