Some peoples like Ali and Foreman did drag possibly even bigger crowd, Golota in his good years was dragging quite an audience too so I disagree that Hatton had the biggest crowd or was unique for such. Still, I will give something to the Hatton's fans: You really gave a lesson to any other crowds about togetherness, noise and how to drag ambiance in, something I've personally never seen. I did show my brother who's not a boxing fan at all the Mayweather-Hatton fight and he was staggered when I told him that the fight was in the US and not the UK and he stated that he understands now how insane the englanders were and why they often mock the ambiance in our stadiums over here.