FWIW GamePass in the US is cheaper, but godawful software that will, for example, force you to clear your cache and log back in every time you want to watch another game. Every year it gets a fresh new look, removes a couple features, and adds bugs. It's the worst software I've ever used.
Because GamePass outside of the US does (in addition to the on-demand and condensed games and "all 22" stuff that the US GamePass gets). It's kind of like NFL Sunday Ticket but delivered by akamai instead of satellite.