There is a minimum height requirement (5'5''), which was lowered in the 90s, as wrestlers were implanting silicone in their scalp to meet the then requirement. Enho is 5'6'' and squares off against guys like Ichinojo that are 450 lbs+. He is currently in the second to top division, as the bigger guys have better figured out how to deal with his speed/his injuries are accumulating.