Can't say that I haven't seen Joey Johns play but I know he was a druggo so I'm not ever gonna accept him as the greatest ever. I honestly don't know who the greatest ever is
I don't think Johns is either, honestly I'm not sure its a fair question as you can make arguments about era's, technology, positions, surrounding personnel etc. But by definition he is to scale the most overrated player in the comp.
A great example of this is 2014 Origin.
To make it perfectly clear, I'm not calling Thurston shit, he's top 10-20 all time, but I feel commentators and the like get carried away with him