His chin really isn't that bad, he has never been iced and he always gets back up. He just loses his self confidence when he gets tagged.
Wlad´s chin is okay. In the past he did not know how to react if he get caught with a hard shot. With Emanuel Steward Wlad learned this and react very well. He took some hard shots. Wlad never was not out cold. His chin is okay.
You cant be the best ever if you dont have great fighters to beat. But if he had a good chin,he would be less cautious and maybe give some more interesting fights.
If his chin was of the granite variety, however, he'd have beaten Sanders in March 2003, which likely would have led to a showdown with Lewis later that year. That was what HBO was kind of building towards, and the Ocean's Eleven shoot gave them depth to a good back story. If Wlad beats Corrie, Vitali remains in Wlad's shadow in all likelihood. It would have been Wladimir, and not Vitali, who would have had the opportunity to face the great Lennox Lewis.