That's because he did the maximum 8 triples in the seven other jumping passes, with only one 3+3.He thought he did maximize Being basically only one with quad triple and triple axel. No one else in the entire top 10 really had that. It’s like he needs a double toe but The winner didn’t need a quad? I mean why was the quad so worthless? Quad triple so worthless. And Lysacek also ended his program with a double axel jump.
Remember, that's just how the system was back then. Van Der Perren was doing 3+3+3 in the early stages of IJS and he was throwing in 3 double Axels to fill in his content, too, before there was a limit instituted.
ETA- actually, I just looked, and the 2003 Skate Canada where Van der Perren went from last to nearly medaling he only completed six jumping passes out of an allowed eight. 3Lz+3T, 3S+3T+3Lo, 3F, 2A, 3Lz, 2A. He had no 3A at the time, and repeated the Lutz and toe. The only other thing he could've done is throw in two more double Axels, to have four in the program (legal back then AFAIK). So really there was no benefit to his 3+3+3 or his 3+3 combo if he wasn't going to use all eight passes. The IJS from 2003-2010 needed a lot of work.