The conventional methods for grading QBs are completely bogus. Yet, you are not pissed off about them. In fact, you are using those methods to hype your favorites QBs. As for the mental aspects, you want to claim that your favorite QBs have extraordinary mental prowess even though you cannot possibly see or grade their value.
If you can explain how you grade the mental side of playing QB from your perspective as a fan. I'll adopt it, if it makes sense. So, describe your method -- please.