Darth Caedus/Jaina Solo vs. Luke Skywalker (Vector prime)/Darth Vader ROTJ

The twins team up to kill their Uncle/Grandpa in a duel
*Lightsabers only

*End of New Republic Era Luke/Start of Vector Prime

*Jaina as of Fate of the Jedi

*Legends Vader

Team two, comfortably.

Edit: Since this is lightsabers only, it's not as decisive, but team two wins regardless.

Up

Vader solos, Jaina is no match for Caedus who isn't even as good as ROTS Anakin.