What sports are we talking about here? Boxing? I agree. American football, to a certain degree but the game is played on the sidelines, it is the coaches out-thinking the opponent, the players are basically chess pieces. Football, or soccer, they aren'T even supposed to touch each other, how is that out-muscling anybody? Hockey, to a certain degree yeah. Basketball, some part of it is, some parts is not. Tennis, totally. Cycling, there is strategy but it is mostly how you can perform day after day. etc.... You cannot generalize like that because it simply isn't true.