i've noticed a difference in the smoothness of games, but i dont care, has nothing to do with casual or not...as for 4 playing better than 3, i would hope so...the devs are more experienced with the tech, so i hope they'd be able to make a better product...
i'm not doubting yall about it playing/looking smoother, i'm just saying this is one of the things i never cared about when talking about a game...seriously: if they didnt tell yall the framerate of the game, would yall actually care or be able to tell what it was?...could yall sit there and be like 'yea, that's 30 fps' or 'nope, that's not 60 fps'?...i dont think this is something gamers really care about...i think they pretend they do just so they can have a bragging point for their console/game of choice, but that's about it...