I wouldn't write off David Haye's chances of beating both just yet! But lets see how he goes on with Barrett first.

This would be my ideal scenario though. Wlad destroys Povetkin and Haye does the same to Barrett to set up that fight.

Vitali takes on Valuev and unifies them titles.

Haye KO's Wlad (no problem.... i hope lol)

Vitali smashes Chagaev when he makes his comeback.

Haye beats an aged Vitali to become the undisputed heavyweight champion of the world. SIMPLE LOL

No I don't think it's too bad for boxing by the way. At least we do have the best heavys as champions (not including Valuev of course).