Hm, interesting question. I don't know if shoes trump clothes for me, exactly, but shoes are a much harder purchase. And probably more important, in a way. I have wide, high-volume feet, and I walk/move around a lot. I'm hard on my shoes, so they simply don't last like, say, a good jacket would.
I often look to my shoes to bring some subtle eclectic-ness into my outfits, but my feet are too large for pretty, dainty, strappy things. I need sturdy shoes that ground me. Hence my functional funk factor. That's a tough, tall order -- and while I have high demands on my clothes to fulfill all these requirements, the stakes are not quite as high and the clothing items are frankly easier to find. I can pick up a funky sweater no problem, but I can't pick up a pair of cute silver metallic ankle strap flats... as much as I'd love to.
I have more clothes than shoes, but shoes operate differently in my wardrobe!