You've obviously never seen the type of fighters the tire changer was fighting early in his career.
Fighting your way up is a crime? As is changing tires to feed your family?
Hell, is best non-Arshotsky blitz KO win is against mediocre 205lb Abongo Humphrey, a fight in which he gassed in, and had trouble putting Abongo away despite him being 5 or 6 inches shorter and 50lbs lighter.
Abongo came into that fight as an undefeated HW with more muscle and heavier hands due to it.
And Abongo is notoriously hard to put away. He's taken so many huge shots and walked right through them...
As a matter of fact Brett Rogers is the only fighter to put Abongo away with strikes.
Rogers' resume largely consists of hillbilly truckers that were just happening to stop at a rest stop, and decided to take their wifebeater, grab some shorts and step into the cage. And he nearly lost to one of them, in Warpath.
Last I checked he beat Warpath by unanimous decision. Not split.
All these fights prove is that Brett started from the bottom and worked his way up. How does that make him a bum??
If he was a bum he would have lost to the "truckers" you are pointing at. On the contrary he's only lost to Fedor and Overeem. And if he lands one of those brickhouses on Barnetts chin Josh is in a world of trouble.