Re: who is the greatest of all time? vote.
Robinson's only losses in peak form took place when he was outweighed by 16lbs against a fellow ATG whom he beat all 5 other times they fought and the first match against a HOF'er who was his 5th consecutive opponent in 4 weeks. 5 fights in 4 weeks! it's pretty hard to be at top form under those circumstances, and Robinson set things straight 2 months later in the rematch with a brutal stoppage. Outside of collapsing from a record setting heat wave against Maxim after 13 one-sided rounds in his favor, those were the only losses in Robinson's first 12 years and 130+ fights.
A bit hard to call that inconsistent. Even the post-retirement Robinson on the comeback trail probably beats Hagler. Hell, the 40 year old version who was besting Fullmer has a decent shot at beating Hagler or any middleweight we have footage of (not that he should necessarily be favored). He was that damn good.