By Barry McGuigan More than half a century on, mention of that classic British heavyweight showdown between Henry Cooper and Joe Bugner is guaranteed to rekindle the debate about who won. Controversially, Bugner got the nod in an all-time British classic. I was in the Cooper camp. Still think Our ‘Enry deserved to have his hand raised. Now, 53 years later, we are reflecting on another classic heavyweight duel. Frazer Clarke and Fabio Wardley fought themselves to a standstill at the O2 in London last week in a bout that divided the cognoscenti. Though both emerged with their unbeaten records in…