According to OPR most pros cash 15-20% of the time
Not sure how ya figure this?? Does it have a filter for stats. saying 'most pros'?
If you filters are set for strictly MTT's, I don't think you'll find many (if any) of the top online MTT players cashing at 20% ITM (i've run many of them and have found it rare to see any of the top guys cashing higher than 12% ITM (also if they've played some volume)).
Who are you considering as being 'most pros'?
You'll find many of the high buyin online MTT players playing in Fulltilt's $1K Monday.... I've never seen any of them cashing anywhere close to ITM 20% (I could list dozens who are making the highest MTT profits online... scrolling pretty much the entire lobby of the $1K you'll find many of them in there (ie. Believer82, Doc Sands, da_professional, NEONPILS, Julian Verse, TitanTom, USCPhildo, bballer88.... the list goes on,.. many of them with NetProfit in excess of 1/2 million on Fulltilt)