Those are two wildly different things to compare. Among all degrees of doing something usefully physical, exercising at all would be at the bottom of the ladder, and competitive athlete would be at the top. But you don't need to want to compete to want to get stronger, improve your form, improve your mobility, looks, lose weight etc.. and a greater protein intake would likely be helpful with all of it. It's still good to exercise anyway, obviously, but diet is considered a massive component in getting results of any kind for a reason.