Oh, I was referring to the outside of the boot. I should take a picture of them top-down compared with my bro's Salomons (both size 9) and the Vans are considerably wider. My Vans actually fit pretty tight, but the outter portion of the boot is wide, at least for the boots I tried on (Aura, Matlock and another one).
Well then you're absolutely right about that. My new Vans barely squeeze into my M/L Union Force baseplates. They get in there but without a hair width to spare.