are both klitschkos in the top 100 heavyweights

Of course they're top 100. That's not even a reasonable question. The question is where in the top 10-20 heavyweights are they. No need to figure that out now. Wait until they retire.

 

Wlad would annihilate Carnera in one round.

 

I also have Wlad ahead. He has a much better resume: more names and deepness.

I doubt Wlad can do 10 more title defenses. That would mean he would have to dominate for 6 or 7 more years. By that time, he would be 42. I doubt he can preserve his level until that age.

I think Vitali won't fight more than two or three more fights.

 

I rank Wlad as #8.

Vitali #15.

 

If he returns to fighting 3 times a year he can have 10 more defenses before turning 40 easily. The problem would be getting 3 contenders a year to fight him.