I use a Mac computer and the game is compatible for a Mac (no emulator needed), but it's not an option for submitting a speedrun on. If I were to submit a speedrun, does it have to be on PC (and if so, why?) or does "PC" just mean a computer in general?

Computer in general

is a pc emulator on an Xbox allowed?

Emulators are not allowed

are toasters running windows allowed?