All three will do well and be in the title picture simply because they are much bigger then almost any boxer in those eras and have much better standards of training etc.Interesting points but don't agree about it being three special guys. Put any of them in the 60s, 70s, 80s or 90s era and none of them get anywhere near a title imo.
They're at similar levels and are all undefeated so it's competitive and exciting.
With Dubios coming in the next 2-3 years, and let's not forget Parker was undefeated until he faced AJ too, it's good for a while yet.
Whether they would dominate is up to debate - personally I think not. TBH I'm not sure if they would if it were in the early 2000s when the Klitschkos in their prime who have equal levels of training.
But either way it doesn't matter - like you said they are similar levels and are all undefeated so finally the heavyweight division is competitive and exciting again.
(I bet he says that because even he doesn't think he won the fight on points)