Ive got to add my 2 cents worth here....

I knew Ike from the day he walked into Curtis Cokes Home of Champions gym in Dallas Tx.
He was telling everyone he was going to be world heavyweight champ & no one would beat him.
I watched as Curtis molded him from a crude brawler to being a great boxer / puncher.
He was right in his statement that day No one did beat him in the ring as a pro. His downfall came at the hands of a vegas hooker.
In my opinion Ike would have been the natural successor to Lennox Lewis. The Klitschko brothers would have been demolished.
As for Ike's mental condition? Put yourself in his place he was kept under heavy sedation for 14 months like a zombie almost because they were scared of what he MIGHT do
After 14 months of sedation anyone would have mental problems don't you think
Yes it was a tragedy what happened to Ike Ibeabuchi not only for him but for Curtis Cokes too. Its every trainers dream to train the heavyweight champ. Curtis had two guys more than capable Ike & Kirk Johnson bot both failed to win it for very different reasons