Historically, Mac has been the go-to system for production… same thing with ProTools… It’s just what people used. In the last few years, technology has loosed their grip on the market making PC and other DAWs like Sonar a remarkably viable option.
Non-musicians use the term “ProTools” as a catch-all word for “music production software”. In the same way that most Americans ask for a “Kleenex” when they are really in need of any facial tissue on which to blow their nose.
Mac users will normally swear by the supremacy of their machine… PC users will normally swear that their machine is equal to (and cheaper than) a Mac.
Some people are dog people… Some are cat people… That’s exactly what this PC\Mac debate will always be.
In short… Fear not! There are many machines out there which can excel at production… Use great software and high RAM (and maybe take it out for a nice dinner on occasion), and you’ll be able to do nearly anything - regardless of which brand you choose.