Here's the raw data. Don't read it too much. Just jump back after you've read the conclusions.
This table describes his shooting prowess against >.500 and <.500 teams (as well as rankings according to defensive efficiency.)
If he's good, he's shooting above average in both fg% and treys.
If he's bad, he's shooting abysmally in fg% and slighlty above average for treys. Or he's utterly failing at both.
He's good against 13 teams.
He's bad against 15 teams.
Out of the teams i'd expect him to be bad against, he was good in 5 of them.
Out of the teams i'd expect him to be be good against, he was bad in 7 of them.
And these were the teams he was horrific against. Scored less than a 3rd of his shots.
5 teams, you'd expect, because of their defensive prowess. But the remaining 4 teams shouldn't have been such a mess.
If he's not shooting well, how can he make up for his other defensive failings? He's a giant coin flip. Play him 5 minutes. If he's hot, give him more minutes. If not, shut him down!
(This essay assumes that he is a defensive liability due to his age and the fact that I don't like him.)