Prime Michael spinks vs Prime Rjj at LHW 15 rounds

Good fight, but I'd take Spinks. He was awkward to fight and people would be surprised at how much bigger Spinks was.

A prime Roy Jones Jr was like using a cheat code to give your character invincibility status.

Spinks vs. Ezzard Charles Now that would be a fun and highly technical fight.

Roy Jones would have to fight very conservatively, even more so than se did with Toney. Spinks had real power and was very accurate. Jones by close UD in a boring fight.

If Spinks could connect with Roy's jaw I could see him KOing him.

I think your username says everything. Spinks would be a half-step behind Jones in speed, reflexes, and footwork. Sometimes Spinks was awkward and his footwork wasn't the best and I think that makes a big difference in a fight against Jones. Everything flowed better and was more fluid in Jones than in Spinks. Just my take.