I agree with you about keeping an official handicap. Do you enter hole-by-hole or total score?
I agree about the skewed handicaps on Oobgolf. Mine works out to a 9.2 right now which is asinine, 12-15 would be more like it. Sure I have shot par a couple times but those are few & very far between. Majority of my scores are in the mid 80's & lately have had some in the mid 90's.
I believe GHIN is only total score..... (it was when I did it and no thus no ESC, right??) I put in hole by hole at OOB...