This is from the UFC's YouTube channel, so it's their creation. This cuts both ways. It's at once a recognitiion of the UFC's growth that a major label star is lending his work to be used for cross promotional purposes...and it is probably upsetting to purists that the UFC uses pop culture icons rather than an appeal to the virtues, character and challenges witnessed within the sport itself to promote their brand and MMA. Judge for yourself.
Correct me if I'm wrong, though: didn't Fox use 50 Cent's "Who Run It?" to promote a few MLB games?