On isolation, though, it's just more driving - mostly because it's absolutely abysmal if you don't have it.
My guards have equal or more passing than driving. Both of them. I knew they would not be able to beat 19-20 OD, but the quantity of open shots inside suggests that they did feed the bigs (I can tell you both big men have not impressive offensive skills, they are ok, but they would not overpower defenders on their own).
My point here was that ISOs (and specifically Outside ISO) doesn't work well below a certain level against in competitive situations because everybody stacks OD. So going against 20 OD with 16-17 JS, sub 13 JR, 16-17 DR, 15-16 passing and the likes it's not going to yield good results. And a difference of 2 or 3 DR (say 14 to 17) is probably not going to matter in overcoming such high OD.
At the top level (D1, NT) those numbers maybe are more like 18-19 JS, 19-20 DR, 15-17 PA, so a battle against 19-20 OD presumably becomes more balanced. I think Inside ISO is more balanced, but again against good ID, you see the ball often kicked out to the guards who will take a lot of shots (at least this is a common complaint).