Mariota can learn from Braxton Miller?

Mariota is a great QB and seems to be a very decent guy. I just worry somewhat about his ability to hang tough when he gets a little beat up. He becomes mediocre very quickly after he's hit a few times, after he gets roughed up and a little injured, like during the Texas game. I understand that QB's (or any player for that matter) won't play their best when they're banged up. Braxton Miller got bruised and battered but he still gave 100% effort from what I saw in the Orange Bowl. I am concerned that Mariota doesn't have this same kind of fight in him. It's something he needs to find because no one is going to get through a season unscathed, unless you're AJ McCarron and hardly ever get tackled.