Moore,Foster,M Spinks, Conn V Beterbiev????

[Bronson66]

Archie Moore,Bob Foster, Mike Spinks,Billy Conn , all light heavyweight champs, prime for prime,how do they do, individually matched against the best version of Artur Beterbiev?
Fifteen rounds?
Do they all beat the heavy handed ,stalking, Canadian based Russian,or does he tag some/one of them for the ten count?
What do you think?