This has nothing to do with racism and associated taboo words. It shouldn't have anything to do with Hulk in general either. This is just a quick and dirty dunk on Cena, not because Hulk is necessarily better than him in general, but because he's like the americanest wrestler of all times.

It is definitatly a poor comparison seeing how Hogan himself, not to long ago, sold out to a different oppressive regime (in this case Saudi Arabia along with a lot of WWE sans, ironically, John Cena who didn't partake in Crown Jewel for ethical reasons).