Malgus could stomp Kyp in a duel, Exal can hold off Jaina with her force powers.
Team 1
__________________ "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
Suppose Kyp doesn't let it become a duel and hangs back? Kyp's kinda like Plagueis that way, in that his melee is weak, but...he's very strong in the Force.
He outdueled an ambidexterous, acrobatic combatant who had been trained solely for the purpose of countering/killing Plagueis. His former master also recognized him as a master duelist. He dislikes saber combat, it doesn't mean he isn't good at it (he is lacking in feats though, to be sure). You just always make it seem like he's fodder with a blade and wouldn't be able to outduel any half-competent swordsman.
Likewise, Kyp isn't a complete n00b, but he's still something like 9 in Force and 7 in Sabers.
Plagueis's melee is mostly a function of his force augmentation, where his massive force powers really kick in. I mean, everybody's claimed to be a master duelist...even guys like Obi Wan. Doesn't mean everybody is, in fact, a master duelist relative to others with that title.
Obi-Wan IS a master duelist, but I can understand your point of view. There are master duelists among master duelists for sure, I just think Plagueis' skill gets shat on a little too much sometimes.