I'm confused by this whole thread. There seems to be an assumption that a contender needs to be built on a high volume scorer. That's simply not the case. The '04 Pistons, all the Spurs Champions, our '08 Celtics are all examples of team's that weren't led by a 25+ PPG scorer.
With Rondo as our set up guy, likely raising his scoring averages to 15-16 PPG, Green averaging 18-20, and Sully and Bradley continuing to develop, that's a good start. By no means, am I claiming that I think that's a title contender as is, but it's a good foundation.
I don't see any reason to expect Jeff Green to all of a sudden start scoring like Kobe Bryant, Kevin Durant or Lebron James. I also don't think that it means that we are in a hopeless situation when he doesn't.
I do expect Jeff Green to put up 18 to 20 points a game, though, once he becomes a full time starter, playing 36+ minutes per game consistently. I think asking for more than that is completely out of touch with reality. Considering our current roster, he'll probably be our top scorer, but there's no way he'll be running the offense. That job will still fall to our pass first point guard.