Chesedname, a marraige of 50%-50% doesn’t mean that literally. It means neither is the boss.
In my marriage, the person who is most passionate about the subject generally wins. We love in each other and want the best for our family, so we don’t overuse this.
For example, we are looking at schools. DH really wants a gender specific school for our children. The only school like that near us is a school I won’t send my kids to because IMHO the administration doesn’t care about the children from what I’ve seen. I am more passionate about that, so we are probably going with a coed school. My husband has no problem with this, even though his preference is to not send our kids to coed schools.