I assume that talent plays a much larger role in performance, but does anyone have a feel for how much formation IQ plays in. I have been starting a freshman offensive lineman who is strong at Oline (51 OL rating) but only a 32 and 30 at this point in the season on my two primary formations. The 2 guys behind him are all 50 OL rating, but their formation ratings are 49 to 55 range. I assume I should be starting the 2 guys behind him over the freshman with the 32 and 30.

Is there a scale or a feeling? Is it 75-25 Talent to formation or 50-50 or something different?

Actually, your 75-25 aint far from what I would guesstimate. But only way to improve talent is to play the young player and grow him. His attributes will grow faster with more playing time.

I generally believe that at most positions, what is you have is right (75/25 or so). With QB's though, formation IQ takes on more importance. A talented QB with a low formation IQ will throw a lot of INT's. A mediocre QB with a high formation IQ won't throw any.