alt Hacker Newsmac treats modifier keys like modifier keys whereas windows treat super key as modifier key and start menu key (which is weird)
mac treats modifier keys like modifier keys whereas windows treat super key as modifier key and start menu key (which is weird)
Tapping modifiers keys is something you might want to do.
I know many people on smaller keyboards map a single Control tap as ESC.
The only thing special about windows, is that the OS gets to own the Win key completely, which is something not too crazy and I sort of like the idea of ensuring their global shortcuts are always available.