I don't think thats really an apples to apples comparison. Were S. Carters, Sean John, or any of those shoes ever *hyped*, at all? None of them were backed by Nike / Adidas (I think S. Carters were Reeboks?). Did any of them ever sell out, even on release day?
I'm not saying Yeezys will be hype forever, but you're comparing shoes/clothing from rappers that was basically just taking an existing shoe model and putting their logo on it.... versus being backed by Adidas, and selling out multiple different unique models. 350 v1, 350 v2, 700s, 750's, 500's.