Aura, aura... That's all I hear. Having a bigger gun doesn't automatically make you a winner of a fight. Kite made a tragic amateur mistake before the fight had even really begun: He didn't focus on the enemy but thought he had the luxury to worry about others (despite the fact he had told Gon & Killua that he won't be looking after them but rather thought they would be useful for the mission). If that cost him his life, like it seems right now, then he was definitely a worse fighter than the Phantom Troupe members. It doesn't matter how fancy a tank you have if you drive with your head out for any sniper to put a bullet through. As a nen user in general he might have been more skilled and gifted (with the exception of the leader, I reckon), though little good that did to him.