For anyone that has seen Barnes play, Scal doesn't even compare.
Scal is a nice player, but Barnes is a legit NBA wing. It is true that Barnes will not be going to an all star game in his career, but is a solid back up.
I like Scal but his main skill is knowing when to make good fouls and hitting wide open threes.
Also, if you don't think that Barnes is athletic watch the highlight video and pay attention to the last play. Let me know if you think Scal can pull that one off.
No, no, no, Scal is the man! He has red hair and stuff, and he tries real hard. He's 6'10", can't rebound, is slow, and can't guard a single person in the NBA one on one, but I love him! Let's start him instead of KG LOL.

Honestly, I can't even begin to understand how a single person could want this guy on the team period, let alone actually compare him to a legit NBA player. Not to mention he is not a wing player by any stretch of the imagination. If you don't like Barnes, fine, I am not his biggest fan either. But anybody that says that the Celtics don't need him because they have Brian freaking Scalabrine is guilty of some serious homerism in this case.