Wolf Sazen vs. Vindican

Legacy duelist vs Malgus's teacher

Force sabers all out

Probably Vindican

Im not sure. Vindican doesnt strike me as anything Sazen wouldnt have see fighting rank and file one Sith. I think he has a fair chance

Yea, Vindican may have been a good teacher, and reasonably strong, but Sazen's fought that kind of thing a fair amount. He's a reasonably major badass in his own right.