How is Arlovski overrated?

This has got to be one of the dumbest statements around today. The only people who make AA overrated are people like Dana White, who said AA is the best HW on the planet.

But from a fanbase point of view, it seems that AA is considered the best UFC HW for the past couple years. I never heard any rational person claim that AA is better than Fedor or Nog.

So how is he overrated?