But you're just guessing (or hoping) that the guy taking the lumps will learn and grow from it.
This is wishful thinking.
Perry has not done a single thing to make any reasonable person think he's going to win the starting job.
This is bad logic.
Rosier is limited, yes, but it's a competition. Perry was far behind in August and unless he's made up a lot of ground by March, it won't matter how limited Rosier is.