Fair enough, there will be some drop off...for example, let's look at Groves.
View attachment 2390
Groves before OU in green, then at OU the last 2 years.
I try to adjust the final score based on KP team efficiencies to see a comparison. Maybe I should start using SOS instead? I am not sure what to use tbh, but you see Groves, based on my adjusted numbers wasn't as far off from his transfer in. His PER went down for sure. He got pummeled when we had no guards to relieve his inside game. However, it is not as big of a drop as you may think it was, based on my scoring system...which is far from perfect.