Borbarad
Advocatus Diaboli
In lightsaber combat, Luke favored two-handed styles, but he could still fight single-handed-even with his weak hand-just as well as anyone in the academy.
Well...literally this says that Luke, while favouring two handed styles, could still fight using single handed styles as good as anybody in the academy. Even if he's limited to his weak hand.
That would only mean that he would be as good as anybody in the Academy while fighting with his off hand while his opponent also limits himself to one-handed fighting styles. And the only lightsaber style that is pretty much "limited" to handling the lightsaber with one hand only would be Makashi (watch the lightsaber duels in the films - almost all people except Dooku handle the weapon with both hands). I don't think Luke has many Makashi masters running around in his Academy...
Apart from this: Considering this is an even stronger version of NJO Luke who was already the force god...Revan and Malak would get down pretty fast. In the worst case they get knocked down by "Emerald Lightning". Sion is the real challenge here but - with two Sith Lords killed in front of him, one of them being Traya's most beloved student - I don't think he will keep up fighting for an infinite amount of time. And if he suggests to do that, Luke theoretically could still simply throw him around like a ragdoll.