Well #1 Wlad hasn't held a significant "size advantage" over everyone he's fought...he's not been heavier or taller than everyone he's fought, sometimes heavier, sometimes taller, but usually just one or the other.

#2 I don't think he'd be "average" if he was say 6'1 or 6'3 as opposed to 6'5-6'6, the guy has serious skill....he might be more vulnerable to getting hit but he's a great fighter.

#3 Heavyweights shouldn't be entered in P4P rankings for many reasons but mainly because people simply overrate smaller fighters, they treat them differently. Fans assume lighter fighters have more skill and heavier fighters are all about brute strength. Also take a look at those smaller fighters, it's the biggest of them that garner the most wins and respect, not the smallest.