I think Jones beats him up. Whether he stops him or not is another matter because Roy did at times ease off the gas and would go into cruise control. But I'll go ahead and say that he takes Kelly out in 6 rounds.
I think Jones drops him in 2nd round and since he was better finisher than Taylor also stops him in that round
at 168 roy showed a better propensity to stop guys when he had them hurt, and i think thats whatd happen here roy isnt mechanical like taylor is, in his prime he was about as fluid as a guy as we've ever seen, unorthodox, coming at weird angles, throwing shots from places and angles that didnt seem possible roy hurts, drops, then finishes him off in 5