Although I regard Haye pretty highly, especially at CW, I don't think he compares anywhere near Holyfield.
We have to remember Holyfield single handedly made CW a popular division before even getting into the HW division, and although it's true that they were both champions at HW , Holyfield was more of a champion than Haye was. The names on Holyfield's resume blow Haye's out of the water.