You're simply playing mara wrong.
I suppose playing one "right" in huttball means forgetting about predation in favor of dueling people in the pit to someone like you. Personally, I value winning more than damage totals, which, in huttball, don't mean a damned thing.
Like I said, in Huttball the ranged/melee pendulum swings the other way, except for assassins, Juggs aren't half bad either. Marauders are better than PTs in huttball, but that's because PTs are abominable in that warzone, not because marauders are good in it.