in shooting percentage thread, there is the assumption that OD was trained "too much", which should probadly the main skill in fouling.
I don't know what this assumption was based on. However, Jump Shot is being trained significantly more than defense.
This can be easily checked on the transfer market. I picked a the first level that came to mind, prominent. The results were:
Jump Shot (prominent or better):
234 results
Outside Defense (prominent or better):
37 results.
"I don't know half of you half as well as I should like; and I like less than half of you half as well as you deserve."