Well, this is just my personal opinion, but I don't think he is in focus. I think your lens front-focused and that's why he's not as sharp as he could be.
Again, just my opinion.
That is not your opinion, it is fact. His left hand is in focus and if this is your prime example then I wonder what results you expect?
Also, 1.6X crops are not the same as 1.4 TCon. Tcons magnify and crops, well crop.