Darth Traya and Darth Malgus vs. Exar Kun and Darth Nox
Force, sabers, all out
Battle takes place in the Dark Force temple
__________________ "Happiness is a lie. Life is horror. The light is always dying all across the universe. The last star will flicker out someday, when it does, all that remains is shadow. And I will be its king!"'-Amahl Farouk
I think so too but one detail should be considered: Malgus is an awesome tank. He is the perfect partner for Kreia to apply charged force attacks. This could end surprisingly.
You can't be immune to Drain, just stall it with force reserves.
__________________ "Vader's pulse and breathing were machine-regulated, so they could not quicken; but something in his chest became more electric around his meetings with the Emperor; he could not say how. A feeling of fullness, of power, of dark and demon mastery -- of secret lusts, unrestrained passion, wild submission -- all these things were in Vader's heart as he neared his Emperor. These things and more."