I wonder what on earth would make o northern Muslim to look down on a southern Muslim as a semi unbeliever.
In comparison the southern Muslim is:

More educated, have a better standard of living, is more tolerant etc.
While the northern Muslim is more extreme without regards for life, hates education and fights those that embrace it, Promotes poverty, spreads diseases and illiteracy.

Who is in a better position to despise the other.

What dey see b4 dey said so is different from how you figure it.
Both of us in 9ja need to understand each other way of viewing things, for example most of the masquerad festival where carried out by some of those so called Muslim, where by few northernans that witness that will go back and narrate what they saw.