Ikeep seeing this kind of statement being the ending argument for removing weight limits.. or the classic "Some guy in a massive overpowered biplane will dominate"

Idont agree to any of that at all. The reality is, that guy still has to be a great pilot.
Guys, Idominated novice with an Ugly Stick... Ithen moved up and dominated in Sportsman with a SuperKaos 60. Ialso dominated most contests with that same Kaos, beaten up and oil soaked, in Advanced. Ending up 11th out of 100~some contestants at the 89 Nats.

Thats all Icould afford with Dad's help back then. Iknow Iwould have done much better if Iwas sponsored with the best of the best, but Iwas handicapped with my ugly kaos 60.

Ithink we just need to be honest... its not the plane that may show up to compete against... its the pilot!
I can promise you all, when my biggest competition shows up at a contest, what he is flying is the secondary thought/concern.

I really dont believe removing the weight rule would change much of anything, so long as the size stays in place.