gkelly's Lesley/Suzie example, and BoP's explanatory posts, really do show the faults of the CoP.
To answer the original question, there really should be a balance between Quality and Quantity, as well as Difficulty and Variety. They are all different ways to measure someone's figure skating performance - and as the saying goes, the sum (of the balance) is worth more than the individual parts.
I also agree that Lesley should win. But what if she decided to do a 3A, and two 3Lz's and then did the rest of the program as stated? It's not as good as doing 3A 3Lz 3Lo with the double jumps...in my opinion...but again, the CoP would reward the former example more.