Roy had it all. He was the apex of boxing in his prime. No one touched him. Speed, power, evasiveness.
At middleweight and super middleweight he had devastating power. Only man to stop prime Malinga, dropped the iron chinned Toney, only guy to ever stop Tate and did so in 2 rounds and only guy to stop Glen Wolfe when hadn't even been dropped before and who went the distance with world champions Toney and Littles and did so in 1 round. At light heavyweight his speed and accuracy is what brought him the knock downs and stoppages rather than his raw power. He'd catch you with fast, accurate shots from weird angles you didn't see coming and stun you. So I don't think he his as hard at light heavyweight but he still hit pretty damn hard as the broken ribs of Virgil hill can attest to.
Freakish power. As Roy moved up, he pulled up on his shots to maintain distance/balance/elusiveness AND to preserve his hands which surely had tremendous wear and tear from a lifetime of training and fighting.
Roid could punch but the boxing gods cursed him with the most hideously disgustingly fragile old lady glass jaw. It actually makes me puke up in my mouth a little just thinking about how fragile and unmanly his whiskers were.
https://blog.sfgate.com/tgladysz/files/2012/05/LaurelandHardy.jpg You're not supposed to mention that