I'll take AJ. He's the best out of those three. In reality, as far as "legitimacy" is concerned, it's all in the air really.
I consider Tyson Fury to be retired. He announced his retirement in the fall of 2016 after being out of the ring for nearly a year at that time. He 'reversed' it by saying he wasn't retired, but hasn't fought since so his actions say he's retired. Of the three, I'd rate them AJ-Wilder-Parker in order right now, but until there's unification I don't consider there to be a 'true' heavyweight champ right now.
None of the above. The championship is vacant at the moment. Joshua is the highest rated heavyweight out there, Wlad #2, Wilder #3 and Parker #4.
end of the day they have to all fight at some point, they cant all retire undefeated, especially parker and wilder fighting bums and bums only.
AJ for me. I don't think Tyson Fury will ever get back. I've not been impressed with Parker in his last few fights & Wilder has just got to stop talking about it and step up. (And stop smoking weed haha)
Fury is inactive so can't really be considered in this discussion. Wilder is crap, refuses to fight anyone, and is a drugs cheat, so he can't be considered either. That leaves Joshua and Parker, and Joshua is clearly the more accomplished belt holder at this present time. So Joshua it is.