Does that answer your question?
But in all seriousness, a Carnage/Annihilation Mara should always and I mean ALWAYS beat a Jugg no matter what spec the latter uses - assuming that they are equally geared and skilled.
Rage vs. Rage (which isn't exactly an unlikely situation these days) could go either way, though.
Well, I guess a Vengeance Jugg could win against "any" Marauder if he's lucky with Ravage resets.