Statistically, Rondo is actually a very good finsisher. He missed a layup tonight, but that was the first bunny he's missed in a long time. Tonight, he wasn't horrible, but he didn't do a good job of setting the tempo either. He's young, he's inconsistent, he's better at home, we all know these things.
I will say that he's definitely not the most frustrating Cs player to watch. When he's on, Rondo is one of the most entertaining to watch in the NBA.