I would like to think that Kun in his prime is when he created his new saber and style, so it's likely that he would defeat Ulic, although it would be a very tough battle.
Well it'd still be a unique style then. Assuming you mean like say Exar Kun practiced Djem So, and then blended that into his double bladed lightsaber. Since Djem So was never meant for a double blade, and you can't do all the same moves with a double as a single, it'd be unique.
__________________
"The ability to speak does not make you intelligent." - Sagacious Jedi Master Qui-Gon Jinn.
Registered: May 2005
Location: .::The Anti-Fanboy Confederation::.
The one-handed use of the blade that Kun displays several times (e.g. against Vodo) clearly is. It's possibly a blend of Makashi, Djem So and Juyo elements.
Still this fighting style combined with a unique weapon might give Kun the edge over Ulic given that they stalemated when Kun used one blade and his "normal" style. This aside from the fact that Kun is also shown to use dual wielding and one-handed wielding of weapons which indicates some greater knowledge of fighting styles compared to Ulic who is always shown to use the same style (two-handed hammer strikes - most likely Djem So).
__________________
"Dear God, what is it like in your funny little brains?"