I don't doubt what you're saying it true, but I think the quality of barrel makes a difference as well.
After having a long conversation with KK Jensen and Mike Dagerness (both from Jensen Precision, which is now Proof Research), they said near the exact opposite. They state, if you have a high quality barrel, a tighter twist will handle all the pressure you put through it. I have one of their carbon fiber wrapped barrels on my .308AR. I have a 17", rifle length gas, w/ 1:10 twist. They flat out told me, "shoot whatever you want through this barrel."
So far I've shot 145gr up to 175gr. From cheap steel surplus to high end match.