I can already kinda see what Durant is trying to do.
Obviously the fact he won his rings by being a passenger still bothers him. Miami and Phoenix are both great teams, with great players.
Here's the caveat: while both teams have great players, Durant would be unquestionably the first option on both teams. In KD's head, forcing his way out to a team where he's the "first" option backed by stupidly good supporting cast will salvage his reputation.
In reality it says something different: dude is absolutely scared of the thought of being the guy, because he already had that in Brooklyn and is wanting to go to teams where he can just leech off other guys reps as the leader (Booker/Paul in Phoenix and Butler in Miami)
Sorry KD, but it don't work that way.