just because t1 doesnt mean better im afraid, riot bricked the system. 80% of na challengers beat mibr/furia/kru/eg/100t/c9 etc.
Vortax [#2]80% is a little egregious but i kinda agree with you
i would say 70-80% is a fair estimate. obviously they likely wouldn't beat the higher end vct teams but the teams i mentioned for sure.