Where do you rank Wladimir Klitschko among the all-time great heavyweights?

[ross]

He defended the 3 unified titles 6 successfull times, losing them in the 7th defence.

Holyfield only defened the unified titles 2 times and Lewis just once.

If you have all the major belts you have to face all the top fighters and in quick succession. Mike cleared out the division single handidly.

He cleared out the dregs left to him from the Larry Holmes era

Dregs?

3 of them were undefeated