I respectfully disagree with this... I think this mentality is the reason most QB fail TBH... Teams seriously overpay and over draft QBs, limiting their ability to field a solid balanced team around them, making their chance of success even more of a crap shot.
With the defensive assignments being of a binary nature, in other words, if pass -> do this... if run -> do that. You just cant dismiss one part of the equation if not just for the balance part of benefits. If deception is part of offensive success, then you cant simply deny the value of the threat of a good running offense.
Basically for every 8 ypa passing you get 4 ypc rushing, so it's more like 5/10. But since you need rushing to open up the passing, it's more like passing is 9/10 and rushing is 6/10.
An example is Rams' scoring, they had 32 passing TD and 23 rushing TDs on the season, meaning the rushing TDs equaled 2/3 of the passing scoring. In the same manner 6 is 2/3 of 9. Rushing is 2/3 as important as passing.
As I mentioned, running plays a role, but NFL teams still emphasize it much too much on neutral downs, where it's a huge advantage to pass, and teams with decent QB's should only run as a change-up. Many teams do it backwards. They run too much on neutral downs and pass too much on short-yardage or goalline situations, including 2-point conversions. There's plenty to read on the subject.
This I agree with. I also think the 7/10 pass and 3/10 run scale you provided is only feasible for a minority of the league while most would benifit from valuing the run more, especially 3 yards &less to go like you stated.