Maybe it's because he's buying at the 10M pound level while the Mancs and Chelski are more often in the 20M range. But, if that's the case, he needs to start getting rid of some of our mediocrity and finding better diamonds in the rough (a la Sven at City).
He wanted Tevez and did't get him. He's got Torres, but for a team that tries not to lose rather than to win they are a bit weak at the back.