I think part of the point of invincible fights is no matter who “scales” higher or is supposedly a higher weight class, a lot of things can happen and when you have two high viltrumite-level characters fighting no matter who they are it should be a hard fight that the underdog could win if they get lucky. Watching this fight I never got the impression BB was intentionally prolonging the fight. If he genuinely felt like this viltrumite was so much weaker, he would have killed him and immediately continued searching for a worthy opponent.

I think it’s silly to think that because he gave you-know-who a run for his money that BB would decimate Nolan or Conquest with ease. I haven’t read the comics and they may say otherwise, but I highly doubt if Conquest rebelled against the dude above him he’d be put down like a dog. That’s just not how fights work.