youre arguing about different concepts
it is well known that Jews have a higher form of Neshama than the people of the nations. this is a basic principle of Yiddishkeit mentioned many places especially the Ramchal.
is the behavior of Yidden better than that of the nations?
as a People, certainly, far better, far more moral, far closer to Hashem and his ways, far more gentle and kind and generous.
individuals? thats a whole different story. certainly the behavior of a particular goy can be considerably better than some particular Yid. mother theresa must have been far more beloved in Shamayim than bobby, but their potential was in no way comparable.