*sigh*
Two points to the doom-and-gloom crowd.
(1) The defensive schemes Yabu's part of are abysmal. They were last year for his European team and they are almost non-existent this year. It's impossible to judge Yabu's defense in context with a mismanaged/over-matched team. Until he's part of a team that actually emphasizes defense with some decent defensive players around him there's no way to judge how he can perform on that end of the floor.
(2) Stop saying Jimmer got 33/8/8 and using it as a comparison. Fredette is in the absolute prime of his career (27), has years of prior NBA experience and dominated the D-League. Yabu is 20 with no NBA experience. If Yabu is putting up stats anywhere near comparable to Jimmer then you have to look upon those as a win and not a negative given the age and experience differential.
------------------
On another note, I have no idea where the narrative came that Yabu was going to be like Draymond Green. No one else is like Draymond Green and Yabu wasn't drafted to be his clone. Their games aren't comparable. Even if they were, Green didn't even start at Michigan State until he was 20 and was a 4 year college senior and still didn't play even 20 minutes per game at Golden State until he was 23.
Using that as context, trying to pass judgement on the prowess of a 20 year old kid who joined a Chinese team 2 months ago is absurd. The fact that he's actually performing well is something to be encouraged about. Complaining that he's not dominating the league like the next Charles Barkley is an entirely unreasonable expectation. When taking everything into consideration, it's hard to argue that Yabu isn't meeting or exceeding expectations.
We all know that some people don't like Yabu. They didn't like the pick on draft night. We know that they want to continue to justify their dislike. We know that they like to think Ainge's drafting record is poor despite all evidence to the contrary that Ainge (at worst) is no worse than average in his drafting and most evidence points to him being quite a bit above average). We understand they have a right to their opinion even if we don't agree with it. But if someone's complaint is that on a night Yabu went for 24/12 is that the defense of his overall team was poor, then they have nothing.