Rubio was Spain's most consistent player in FIBA and one of the best defenders in the tournament. In their only lost game against France, he was the only Spanish guard who was able to penetrate and dish, while the others simply got pushed out of position by France's quite physical defense.
Some players on the roster, we haven't mentioned: Mo Williams, Chase Budinger, Shabazz Muhammad. Mo is a pretty good veteran to have in the locker room and on the floor, Budinger is all right as 9th-10th man on the roster, and I'm still intrigued by Shabazz.
Rubio may have in fact had a good performance in FIBA, not that I would know, but whatever international success he has enjoyed has not translated well to the NBA.
By and large, Rubio has statically been one of the worst starting PG's in the NBA over the last 2 seasons. He just has not been a very good NBA player. I wouldn't want him anywhere near the Celtics.
I agree that he hasn't proven himself in the NBA yet. He needs a breakout season. Someone recommended that he should take after Rondo, because Rondo might not be a better shooter than Rubio, but he makes way better decisions about when and where to shoot.
