What logical evidence do Levitt and Dubner present in response to the counterclaim that a 7-7 wrestler might be more motivated to win and therefore perform better? In the next match, 7-7 wrestlers' results drop below their predicted percentage. The 7-7 wrestlers do well against both 8-6 and 9-5 opponents. Wrestling matches only last a few seconds and are won by a quick exertion of force. Wrestlers from the same stable do not oppose one another