Hoffman does not have more saves than Rivera. 37 and 37 are equal. he does, however, have a better save percentage than Rivera, who, by the way, has a better save percentage than the top 2 guys you named.
Cordero: 44/50 = 88%
Wickman: 39/44 = 88.6%
Hoffman: 37/39 = 94.9%
Rivera: 37/41 = 90.2%
Rivera also has the most strikeouts, lowest ERA, and fewest hits per innings pitched out of everyone you mentioned. the yankees haven\'t been involved in many close games this year on either side of the ball, which is why Mo doesn\'t have as many saves as the other guys, and that\'s what makes it a moot point..