The roster is actually very different. Only two position players (Posey, Sandoval) playing tonight were playing on that 2010 team. The rotation is what has remained consistent though. It wasn't a roster blow up like people are accustomed to, but gradual changes like the calling up of Crawford and Belt.
Yeah, I should've said core players were the same I guess. Outside of Cody Ross I'd be hard pressed to name any position players from the 2010 team not named Posey and Sandoval.