This is version 6, keep in mind
The major difference in his seasons is his Hr. He has a abnormally high BABIP. His SOr is the best it has ever been. His BBr spiked a bit, but his SO:BB ratio is still above 3. I wouldn't worry too much there (but keep an eye on that rising BBr; that could be troubling).
I don't know his HR totals, but assuming those don't show a huge spike, the BABIP is likely an abberation and will settle down.
I'd leave him in AA.