They would have ruined each other. Cruiser Holyfield vs Toney of the Jirov fight would be one of the most epic wars of all time.
At Cruiser, in the entire history of cruiser weight, no one. But if we allow fighters like Walcott, or Charles or Louis, who would've been Cruisers today, all 3 and a few others had a chance, though I'd pick Holy of everyone but, J.Louis or A.Moore.