Mike tyson and bowe cannot be considered true waste of talents because they become champs and made a good few defences. In the 90's andrew golota had the talent to be a great. same with ike ibeabuchi. Tua was a good fighter at best. he should of won a title but he was never ATG potential Tim witherspoon and Pinklon Thomas had great potential.
I don't know why everyone is mentioning Tua. He was good but limited. After the Ike war, he seemed to lose some of his movement. Guys like Sultan and Chagaev would outbox him easily.