Firstly, Insomniac aren't the second best PS3 team, they're the third. (Santa Monica and Team ICO take the first two spots)
Secondly, don't worry. Resistance 2 improved upon Resistance in every conceivable way. But they made you only carry two weapons at a time, and the controls on the whole became more standard FPS. They chucked individuality out of the window a little, but the core gameplay is great.
The campaign could use some work, the story is still a mess, the graphics are better, online has been boosted to 60 competitive, 8 co-op. There is a co-op campaign that you can play with:
1) Another player on the same system
2) Up to seven other people online
3) Another player on the same system AND up to six other people online.
Same with competitive, but change the 7 to a 59 and the six to a 58.
So yeah, it's worth a purchase.
(Former) Lead Moderator and (Eternal) VGC Detective 
