He didn't outpitch him last year. Greinke's WAR was 5.2, Pavano's 3.2. Pavano, at least this year, is better than Narveson, but likely at the 1-1.5 win level and next year it would decline further. Given that getting a decent shortstop can make that difference up at 1/4 the cost Pavano isn't really worth given the 2nd year on the contract and the draft pick.