He doesn't bring real heavyweight weight to the division, its manufactored weight. He has very little power against the bigger men and at his best he's 180 tops and still his power can't stop the bigger men. He's not Dempsey or Marciano who have bigger punches at 185 to 191 than the 235+ men have so Roys at a huge disadvantage!
Take any of these current heavies and bring them down to 6'1" at 180 and Roy destroys them, the fantasy stuff gets pretty silly at times. Atleat keep them in their best divison!! Ray