. . . of course . . . definitely . . . Chagaev has a belt and have never lost in the ring and what does Haye have? . . . only his big mouth. :deal
Wladimir is universally recognized and legitimate. Only if you have in mind his brother Vitali then, yes, we have not one but two universally recognized and legitimate and that's how it is going to be while Klitschkos are around.
Well, for me Ruiz and Valuev are way underrated true top 10 boxers who are simply difficult to box. The fight vs. Virchis does not count as at that time Chagaev had personal problems and they were (are?) close friends.