imo he was a less limited version of tua, but not enough to touch lewis or the kbros. barring him landing one of those big punches, they all outpoint him pretty easily
I've never seen Ike hurt in a fight. He threw a tremendous amount of punches for a heavyweight, and they were dangerous punches, as can be seen when he connected on Chris Byrd in his last fight.
I would expect Ike to only get better, train with the best, improve his skills, and be dominant at a time when previous champs (Tyson and Holyfield) were on the decline. I'd give Ike a good chance against Lennox or Vitali with the proper game plan. I don't know who would win, but the fights would've been much better than what we're seeing in the HW division today.