You're thinking of the Whitecloak War I think Aulrick? He captured Mattin Stepaneos. I think he did rather well fighting against the combined forces of Illian, Murandy and Altara so that's why he's ranked amongst the Greats
I voted Jagad, we haven't seen him in action but he has been doing what Iturdale did at Maradon for his whole life. Davram the same obviously but I think Jagad would be slightly better :P
As for Mat, well he's cheating having all of those memories :P