I know a few cases where the relationship was affected negatively.
1 classmate's wife started earning more, then it got into a negative spiral. She started being meaner to him and harping at him, and he started losing confidence, and focused on gaming to get away from her constant bitching, and ended up with ED. Says he hasn't had sex in years.

2 relatives' marriages ended as well when the wife outstripped the husband's salary.

For me, when I got married, I think her salary was about 80% more than mine. My wife isn't materialistic, so it wasn't an issue. She even offered to pay a higher portion of bills, loans, etc.

I think the most important part is the character of the partner.

Married for 10 years now. We seldom have conflicts and always manage to talk things out. One of the reasons I married her. Had previous experience with ex-gfs where they get emotional and angry instead of trying to resolve or act proactively.