That's not entirely true. In 2K10, defenders get "sucked in" animations if they are close enough to the offensive player performing an action. If you shoot over a defender that didn't challenge the shot by pressing the corresponding button, they'll still put a hand up.
Or when a player dunks and there just happens to be an unsuspecting defender nearby, he'll get "sucked into" an animation where he's getting "posterized" like Kobe did Dwight Howard or T-Mac and Shawn Bradley.
How about that funky animation in 2k10 (post-patches), when an offensive player commits to a shot in the paint (or near it), and he ends up flailing about as the defender gets sucked into him with his hands up?
I can keep going on and on about scenarios in 2K10 alone, but my problem with the trailer is that I see some of these same animations. If anything, what LeBron just did in the trailer makes me cautious. I pray that they did not bring back the infamous up and under from the three point line crap from 2k9. Not only did that move suck in the defender, but it also had a 75% rate of success regardless of where the player was on the floor.