Do you consider Wlad's reign so far to be "impressive"? I think if you look objectively at that list of Holy's opponents, take into consideration where they were in their careers and are a strict as you are when analyzing Lennox's opponents, you'll see that both resumes stack up pretty evenly. But of course that won't happen. Believe what you want. :good
That still doesn't explain why he turned the original 13.5m. Maybe there wasn't even a genuine offer to start off with as lewistysonbook said. Career-wise he missed out on the credit Holyfield got for beating Tyson.