So people are going on and on about how awesome this game is..IGN called it a must play for all PS3 owners, giving it a 9.5 and Editor's Choice; Metacritic has the metascore at 90. (for those of you who have no idea, here's a video review)
I'm going to say no simply because the two games blogs that I watch have not ever mentioned it.
From what I see in the review it's another game that would be better on the 360, with it's excellent party system and the ability to voice chat no matter what you're doing. Being able to communicate vocally while playing a game like this in co-op would be essential but you can't do it in the game.
The fact that the game doesn't change when playing co-op is also pretty lame because it would essentially turn a challenge into a cake walk.
Overall it looks like something that would be interesting if the combat is anywhere near as good as Arkham Asylum's and the game should hold your interest until you beat it for sure, but the review doesn't give a number of hours to beat it in which I find discouraging. The bosses also look very cool.
If your in need of an RPG to play, then this is one of those titles you should pick up and play. Yes, the game does get hard, and make you want to destroy your controller, other than that, it's excellent fun. I haven't played co-op with a buddy, just been playing solo. The one thing that's fun to see, is watching other players die, from there blood spill.