Teams go out of their way to not have those types of tendencies though. That is what "balance" is all about.Usually you'll get a glimpse of who is who on a situationnal basis... 1st and 10 run/pass ratio on its own is pretty indicative of teams overall strategy for example. Nevertheless, your buzzword is the actual important factor here. I dont know that I want a pass first team or a run first team, I want the team that nails down the right frequencies in most situations. I would flat out have no problem with my team running 80% of the time on 2nd and 3 just as I would have no problem with my team throwing the ball 80% of the time on 2nd and 7+...
There's a lot of work to be done in that area, while I have no idea if those numbers are correct, I'd rather use that strategy on 2nd down than just go 60/40 pass/rush. Balance is much more complicated than most people think, at least in a game theory setting...
Irrespective of down/distance, teams try to avoid doing the same thing regularly enough in any particular situation, that it becomes easier to defend.
This is not true so much within a single game, as it is an ongoing part of gameplans throughout the year.