Personally I think they are both overratted. Haye good boxer, big puncher, no chin and stamina issues.
Enzo, big puncher, good chin and plenty of stamina, but zero skills.

If they could morph into one fighter, the result would be a world beater but as they are they are both beatable.

In fact I'd fancy Calzaghe or B Hop to be able to go up to 185 lb and beat them both.