I have BFBC2 on the pc and PS3. I also played MW2 on the PC. I enjoyed both games, but the ability to destroy the environment and knock a building down when you have a camper in it are just awesome features imo. I think it depends a lot on who you play with, as with most any other game, but when you do have a good squad, with teammates that back each other up, the fun factor goes up a whole lot for me.
Sadly, I am not in the Beta, so I can't comment on it, but I have heard from a couple of people that were not impressed with it. That may have just been incredibly high expectations.