Typical. The way Mayweather relates his skill to that of an MMA fighter is by how much money he brings in. You may have more rounds to fight through in boxing, but you also get 10 seconds to stand up when you get knocked down, instead of a series of concussive blows directly to the face.
That said, I plan on having a strictly boxing fight eventually in lieu of the normal Muay Thai fights. So, there is a small chance I may eat my words.