Wow. Big Brevin Knight fans - must be Stanford fans. :)

Smush is younger and far more athletic, and skillwise, he can shoot from outside and finish in the lane. Miami needed a big defender at the PG position to help Wade out a bit (Wade's relatively small for a SG) and an outside shooter who could help spread the floor (Wade's does most of his damage inside the arc). On top of that, the Heat need someone who's going to stay healthy. They can't just think that Jason Williams will play 41 games, Knight will play 41 games, and all will be well. They want someone who'll be there every game. Smush has been much more durable than the overall brittle Knight.

He's not nearly the creator Knight is, but between the two of them, Smush's a better fit for Miami and most playoff-level teams. (Knight could be a great fit for Memphis in mentoring another young PG in Conley)