Well, no, it's not. There are significant techical issues involved. Since Adobe has abandoned the Mac as their program of choice, Premiere Pro is Windows-only.Its like Charcoal and Pencil, just a medium.
Also, those neat progs, like AVISynth, VDubMod, and more are (at current) Windows-only, although AVS may see a Linux port.
Mac editing also encourages QuickTime, which is a pain on any OS but Mac - a not insignificant downside.