Julius Erving made the allstar game in all 16 of his seasons won 3 championships and won 4 MVPs Why is he so underrated

NitroXYZ [UTA] Joe Ingles6:11 am Mon Feb 11 EDT Deleted

Ok so the answer is probably because none of us here watched basketball through out the 70s and 80s but that is still an extremely impressive run. Where would you rank him in an alltime list of NBA players? Is he the third greatest small forward in history? Would you rank him ahead of Kevin Durant (assuming Lebron and Bird are 1-2). Its a really really impressive career resume.