The wiki may have been put together by a Forum member but I believe there was input/approval from Devs. The information (the terse dearth that it is) in it is correct, but it does not mention anything about out of position guys that I know of.. maybe I'll go read it again to check.
I do agree with rastaman on OOP, I play guys one spot off and they do fine, sometimes better than their original spot.
When I use hard tackle I seem to get more cards. I only ever use easy when playing a friendly..