A bit late, but jumping into the game-winner discussion: I had much the same reaction as bowdown to Rose's shot in particular, but also Pierce's, despite the fact that I was pulling for the Bulls in that game.
The thing with shots banking in is if you move the player to a different position on the floor and they shoot the same shot, it's an airball. A shot that goes straight in goes in regardless of where they are. So yeah, it's luck, not shooting on target.
The other thing with Rose's shot is they horribly screwed up, fumbled the ball, and ended up just hurling it at the basket. It's hard to be excited by someone screwing up and getting the right result anyway.
For me, it's also disappointing to see someone play great defense and the shot happen to go in anyway, and that takes away from my enjoyment of the shot going in. So if I put myself in the defender's shoes, and I'm happy with what I did on the play, it makes it difficult to enjoy the shot. Whereas if the offense is well-executed and someone gets a good look, I enjoy that more.
So Kobe getting a good look off a screen:
Is better than a well-contested fifteen-footer off a nothing play:
Which is better than Kobe fumbling the ball, throwing it up, and getting lucky:
And they're all Kobe, just to show that bias towards or against the player involved has nothing to do with it.