It's close to two decades now but I don't recall Microsoft promising that all the NT architectures would offer the exact same experience. It would have been silly then, and it would be doubly silly now that plenty of the stuff in Windows is legacy cruft.

Pretty much, Debian moved forward to recompiling for ARMv7 as it netted significant performance improvements, and if you wanted ARMv6 binaries you could compile them yourself. Raspbian did this, but not very well.