Because if Sheets goes 8 IP with 9 ks and 1 ER and we lose 1-0, he isnt an ace. Let's not be sarcastically unrealistic here. When people speak of an ace "stopping a losing streak" it means (to me at least) that he will keep the ball club in the game for the entire duration of the game (much like Capuano did yesterday). If Sheets had the type of game you posted above, no one would fault him for losing the game, much like we did not fault Cappy in his outing yesterday. Now, if Sheets goes out in the first inning and gives up 3-4 runs tonight, we'd have a legitimate gripe.