Harmonix has never been kind to Europe or Australia, wait till the US numbers come in, then we can declare a national tragedy.
That said, it is disappointing to see the entire genre go to hell in only a few years, Harmonix has almost always put out AAA titles, and they got bunched in with Guitar Hero...
Ah well, I guess this will be the last game...at least DLC is still selling really well.
My Console Library:
PS5, Switch, XSX
PS4, PS3, PS2, PS1, WiiU, Wii, GCN, N64 SNES, XBO, 360
3DS, DS, GBA, Vita, PSP, Android