hogan turning was ENTIRELY different.
he had hall and nash (both superstar main event guys) to be aligned with, and is naturally a SOB so he fit into the Hollywood gimmick PERFECTLY.
john cena as you see him, is john cena in real life. he is just a good, hardworking, humble dude.
the nWo was so great, and hogans turn was so great, BECAUSE IT NEVER HAPPENED BEFORE...
if cena turned, everyone would just say they are coping hogans heel turn. and it would be.
hogans was groundbreaking, cena would just be doing what hogan did 15 years prior.