But have they ever no sold a time stop? Is there an instance of one actually resisting one? And it would be a factor, Kars has the means to take him out, time stop makes it so resisting won't happen, keep him sage from other attacks and prevent him from messing with the future of what you is true in it being a manual action. And as it is , Kars can time stop someone who can move in other time stops completely without them even realizing it happened.
Kars didn't, DIO with Kars powers did, he completely no sold Gers willpower manipulation, BFR, causuality manipulation, power negation, setting dios life to zero (and ger just finished one shotting pucci with a single swing of its arm, doing what he did to diavolo but worse, as ger didn't kill him, he skipped that part). Actually, wouldnt being completely uneffected by anything GER can do, to the point Ger and giorno had to willingly kill themselves by Dio's hands mitigate that? Since novel ger is high 3-A/low 2-C in all those regards.
Also if we go the route of "theyre surperior and fight those with those abilities so they resist" then it wouldnt matter, by the same logic Kars just got like 60 new resistances as he can replicate any power within the jojo manga and novel pre part 8, including passively gain resistances to them , as stated by himself, funny valentine, even N.A.S.A (he actually planned on doing this, he got sent back in time though before he could) . So im gonna need a feat of them no selling.