The only top fighters Mir beat who were in their physical prime at time of their fight were:
Tim Sylvia
Brock Lesnar (in his second mma fight)
Roy Nelson
*Todd Duffee - he's young, but he also has some sort of disease right?
Mir's whole schtick to promote fights, was that his opponent was off fighting cans in other orgs and that he was fighting the top comp in the UFC
After the Nog / Cro Cop fights, a lot of people believed him
Mir then had to eat his words with his last 5 losses
DC, Barnett, Overeem, Arlovski, Hunt