Looking at the estimated vs actual ppd, there are some serious understatement for some folders, but a small amount of overstatement as well.
My 970 churned out 11 work units as if this morning around 8am. The 1080 turned out almost 3 times as many at 32. This Pascal generation is way better than previous generations. There wasn't as much gap between my 970 and 760 when they were the combo I used.