I don't think it's a 10 pt win thing it's a win "by the spread" or more than what the "computer prediction" is. Like OSU last night, the line was -17.5 or closed at -16.5, and only beat Nebraska by 12 late, up 22 with like 4-5 minutes left. They dropped one spot with the win non cover.
Listen to the latest RU Screw Podcast........ they cover it....
a cap of 10 points was applied to the winning margin to prevent rankings from encouraging unsportsmanlike play, such as needlessly running up the score in a game where the outcome was certain.