Whoever runs the offense better will end up starting. Neither guy is making big money. It's like $5 mill or something that Pitt is paying them. The 3 QBs that are not on the roster probably cost them more in cap room than these 2 next season.
Pitt is not married to either guy.
I think a lot depends on Russ's ego. Is he of the mindset that he should park MVP talk and just play football to win games. Not try to pad stats? If he does, I think he wins the job as he moves the offense. If he does that he will continue on in the NFL.
Fields, he needs to show stats and playmaking ability as he's more a projection at this point, when he gets into a game.
See who runs Smith's system better. Should be a legit QB battle.