#5 Much better amateur career
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Joshua is a gold medalist of the 2012 London Olympics super heavyweight category. Parker, on the other hand, was unable to qualify for the 2012 London Olympics. Joshua's gold medal in Olympics explains that he is an elite boxer. Amateur boxing and professional boxing are different in a lot of aspects, but still, the fundamentals remain the same.
As far as 31 March is concerned, whosoever performs better on that day will emerge victoriously. Still, if we take into account these five aspects, Joshua definitely seems to be heading for a victory.
Edited by Nikki La'ulu