I'm leaving Wade, Bryant and Roy out of this. Of course anyone would prefer them. That said, look at the shooting guards below. I know certain players work better in different systems. I know some of these guys are a little older, etc. But let's just assume you threw Matthews into this mix of starting shooting guards across the league. Which of these players on an apple-apple basis would you prefer over Matthews? I really wouldn't prefer many of them. I'll post my own list later. Fire away!
Full list: http://espn.go.com/nba/depth
(Arenas, Iguodala and Ellis as SGs seems dubious to me but ok. Let's not consider them true SGs for this.)