I think AR has one of the better arms(incl quick release,ability to throw screens etc) in the league. I think he is a guy who is stuck with an average team. AND he doesnt have the raw athleticism at this point to win games on his own . With right team he is capable of a strong playoff push.
I really dont think there are a lot of great passers in the league right now. I dont see any Marino's or Dan Fouts's . After Mahomes I see a string of very good not great QBs
I do see amazing running QBs though