Felton really knows how to beat up on players inferior to him, plain and simple. If he can slash or run the floor he looks great. No different than NC. He's big and strong and can take contract. He's also short and doesnt have a dribble he can break down his man with. So when he's running or guarded by an inferior player he's a beast. When he's up against a good team or good defensive guard enter the 1-7 shooting nights with 3 assists.
After watching him a few years Ive come to the conclusion he's not that good. Like Martin said.. a really nice backup on an elite team. But as a starter he will make you nuts because he's got great nights.
He cant break down his defender, get in the paint and break down a D and run a team in the half court. It was the knock on his coming out of college ands still true.
Why do you think Woody plays two PGs? If he benches Felton hes useless (see Portland). He's got to get a lot of floor burn to be effective. He's a good defender (not great) and plays hard, but he's just not a great PG, and really sucks in the half court. Of all the positions PG needs the most.
Prigo is good but old as hell and if Woodson continues to lean on him like last night he's gonna play him into the ground.
Jeremy Lin would look pretty good right now 
"winning is more fun... then fun is fun" -Thibs