To be fair why would you expect an MMA fighter to compete with a top boxer at purely boxing? Boxing is just one part of their game.

I would bet my house on any half-decent MMA fighter slaughtering any great boxer everyday of the week. One man punches, the other punches, kicks, knees, elbows, smashes you to the floor and twists your arms and legs up.

I don't understand why people can't be fans of both, they are so different.

Neither is harming the other.