Wandy is undoubtedly the better striker.. and Wandy recently has seemed to tighten up his striking defense as well as bring a better pace and fight smarter vs. his typical nonstop berserker mode..
I would not be surprised to see Wandy get a well timed takedown or two, he is obviously far better on the ground than a guy like Stann.. So if he manages to get hurt and recover he should totally mix it up and go for some G&P or Sub..
The only reason Wandy will lose this fight is due to a huge chin disadvantage and that fact that Stann probably hits as hard as Anderson Silva (proof ala the Leben TKO)btw Stann never actually put Leben out.
I like both fighters and I think either one can finish the other, but if we don't see the finish then I see Wandy taking the decision just because he is better everywhere...
Head-butting fists and KOing the air is not effective striking.