It's a bare bones demo.
NBA2K9 looked sick on PS3 (when I owned that game) never bought 2K10 so I can't comment on that.
I am not woried one iota about this game.
I played 4 quarters last night and the more I play the better I am getting. The feel is amazing. It really is a touch and feel game in regards to the stick skills and controlling your momentum. I love the realisitc weight transfer I am feeling. Also playing the point or the 2 guard it is all about feeling the flow. The post feels fantastic. Defense is definitly there. And this is on default pro and probably not sim style. I can already see how much better defense is going to be. I love how guys are moving around (AI improved big time) fighting for position in the post and on the preimeter. It just feels and plays so friggin real!
Use practice mode when the game drops. I will be there first and foremost and practice like a maven. I want to get iso-motion down to a tee.
This is a game that rewards stick skills, and guys who practice and work at it. I love it.