the first year of Nike boots had very large outsoles and barely fit into bindings. They've since adjusted.
Burton boots in Burton Bindings fit on the high end of our size chart, size for size. Some other brands do too, but that's why our binding size chart says Medium goes from size 8-11 US Mens and Large goes from 10 - 15 US Mens.
That overlap between medium and large is a buffer for the variety of dimensions in the market from other brands.
If you're even in doubt, physically check the fit in a store. Kinda like buying pants.