Your "humble opinion" is not a very good one. Lewis was nearly 38 and heavier than he had ever been.. Not close to his prime.
Previously, Lewis was a lean fighter without force that he had later years. His losses also came from previous years big men also flowering their prime slower
Vitali was on the way to get Ko'd. Was it the 6th that Lennox nailed that big uppercut? Lewis would of went on to win in about the 9th.