I think most people don't understand the difference between someone who trained only boxing all his life, and someone who trained wrestling, Brazilian jiu-jitsu, kick-boxing and boxing.
I love Conor, he is truly best in MMA but I doubt he will be a threat to Mayweather in a boxing match.
Conor is a master at generalism, Floyd is a master at specialism - and Floyd is making the generalist step into the specialist area, and even if Conor is a good boxer, he wont beat one of the greatest.
Decision? Maybe. Close fight? Hell no.
Close fight is a dream! The people that will be fucked if this fight cost $100! This is an ESPN boxing match!