How True?

So I have a pertinent question or two to ask.

Is it true that Nigerian women (living in Nigeria) will not leave their husbands if they find out he has a mistress? Basically, while pursuing my personal passion, I had the priviledge of hanging out with Tuface and his crew on Saturday night and this line of discussion broke out. Tuface's Manager stated with confidence that he is yet to meet a woman in Nigeria who would leave her husband solely because he was cheating and he had enough backing from the rest of the guys. He continued by saying that leaving your husband for cheating is mostly a western idea and that only young women who live abroad or have cultivated Western culture will do such a thing.

Something else I found irksome was a lady within the group who said her husband is free to do whatever he likes but she must not find out about it. She said she cannot expect her husband not to cheat but he must not bring it home. Now this is a lady that lives here in the UK and she seems to think it's the way most married Nigerian women think too. Is this valid?

I know a lot has changed in Nigeria since moving here seven years ago. I mean folks now leave University and walk straight into jobs within multi-national companies, the average person now has access to loans to finance a new car and more people are generally more well off than there were a decade ago. Off the back of that are stories of men and women cheating on their partners without a care in the world and how divorces are rife amongst newly married couples in Nigeria now. So everything is moving rather fast so I would naturally assume that women would have bought into the idea of leaving a cheating husband and fully expect the fidelity that comes with marriage from their spouses. I am not saying this is the right thing to do or not. I just wondered how accurate their assumptions are so guys let's discuss.