POLL: Michael Jackson or Prince?

I know it's needless to ask but I was watching Chris Rock slandering MJ (around the trial error when everybody was) and he said Prince was better than MJ in the 80's & everybody applauded in agreement. Now Prince is one of my favorite artists & he's a super-genius when it comes to music but seriously, how can you compare another artist to MJ even if you do hate his guts?