Well, my honest opinion about the most overrated players in the nba:
1 ) Ron Artest - I could be hours talking about why he's such a bad player. Let's make it short: He really thinks he's a shooter, I don't know why, but he just thinks that. He's a strong and good defender, when he knows where he has to be on defense. And a pro can have that conflictive attitude, he seems like those unmature NFL players that make fouls when time isn't running. If he needs to shoot 30 times to get 17 points... we're not in the good way, etc.
PS: I still ask myself how could he be selected in the third best NBA starting five of 2004 season...
2 ) Jamaal Crawford - He's so far the worst defender in the NBA, and that is not so good as you can understand. He can't play well at PG because he's too selfish. He's a pretty good shooter, that hits clutch shots, but... sometimes he just disappears of the game. Knicks major problem now.
3 ) Peja Stojakovic - Well, this serbian player is a lot smart and is a great shooter, but ... what Serbian player isn't like him ? they're all smart and good shooters, he just can shoot more than the rest. I don't say he's a bad player, because I would be wrong, but I think is overrated.
4 ) Steve Francis - Not a shooter, not a great defender, not so smart playing... he has ability, quickness and tallent, but he should try to be a better player in another way, I don't know which one, but another one
5 ) Quentin Richardson - He's one of the coolest players, and people will hate me if I say this

, but I think hes very overrated. Q is really irregular and so much times takes the wrong decision. If he focuses more in games, he can be an all-star, because Q is a great rebounder, a great shooter, and the crowd always loves him.
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I think that guys like Carmelo can't be overrated, because... they're guys that just started with this, they have to progress, learn , and get better. People spects so much of some star rookies. Will happen the same with Marvin : why he isn't playing well on Hawks ? Was he a wrong draft choice ? nah, nothing of all that. He's just young and new with this.