Ah the old "when all else fails resort to stereotypes" line, you're just as dumb as you look :good No teeth problems here and never been knocked out in my life, thanks. I suspect the same isn't true for you, not even a blind man could miss that jaw.
Yes, Vitali was the number 1 HW fighter in the world when he retired. And he came back and won a HW title, beat a Top 10 guy, and Juan Carlos Gomez and good victories all throughout his career.
Vitali is the very best. He tried to get Haye into the ring, but the WBC forced him to fight Gomez. He also easily beat Peter the WBC champion. Byrd did not win the fight, Vitali had a very serious injury, 2.5 hours of surgery. Lewis was losing the fight until his promoter signaled his ref to stop the fight, not giving Vitali one more round to knock Lewis out. Vitali staggerd Lewis, Lewis could not hurt Vitali. Lewis retired rather than face Vitali again. Lewis was offered huge amounts of money to fight Vitali but he still refuses.
Anyone who really thinks Vitali is great just needs to watch the last twenty seconds of the first round. It isn't that he got dropped, it is that he looked like a frightened, clumsy untalented stooge as Corrie pressed him. Vitali is fortunate to be 6'7" - 6'8" (with only one boxer larger than him) because he is far from being an extraordinary large athlete. He is just the biggest physical presence in an incredibly weak era. Vitali is also very fortunate Corrie Sanders apparently trained on beer and donuts. Making both (prime) Klitschkos panic, flail about, and fall has definitely raised Sanders' reputation and career stock (especially as he was past prime and fought them at the age of 37 and 38 years, respectively). But he has had a marginal career and is barely above pedestrian historically. On talent the Klitschkos stand near the Corrie Sanders and Nate Tubbs of professional boxing. They just have had better careers, support, and have been successful primarily at utilizing a size advantage to defeat a long list of bums and near bums. Sometimes this **** happens. It is similar to winning at the Olympics when a couple major countries are boycotting or setting a sport record when all the able bodied men are off defending their country in war.