Diaz doesn't have DOBing ability like JO. No question. Potential??? Maybe.
I just view them as two different types of players. Diaz seems like more of a face up forward and JO more of a back to the basket center. Diaz seems like a better ball handler/passer than JO, hence more fluid. But, let's be honest, the sample size is pretty small.
Long story short, Diaz has played really well since the Alabama game. Anyone who thinks he sucks is Fake Sugar Dick (WARNING, NOT THE REAL SUGAR DICK!).
If he and JO can hit 12ft jump shots, they'll both play professional basketball. Probably overseas. But, legit 7 foot shooters, DOBers are hard to come by.