This is one of the dumber questions I've seen posted on Sherdog, but I think it was meant to be dumb,
1. Royce beat HW's, and he was 170 to 180. He was the champ then, regardless of who you thought could beat him. It only matters who shows up. It was the entire point of promoting BJJ.
2. Being bigger doesn't make you the better fighter. Look at the horrible talent in the HW division as an example.
You guys need to get over this HW fetish. Being the HW champ doesn't make you the best fighter on the planet. It makes you the HW champ. That's all. There's a reason why we have p4p discussions.
I don't know if this HW obsession is a carry over from professional wrestling, or boxing, but neither is MMA, or fighting in general.
No one thinks Stipe is a better fighter than GSP, or Dillishaw. He's clumsy, and unremarkable in terms of skills.