In some ways yes... Kate was definitely the pants wearer in her marriage. She is the primary breadwinner, she knows how to use a gun, she is obviously incredibly smart. But she also does the majority of the household chores, cooks, and plans the social calendar. Before 10:00 in the morning, she managed to drop both boys at school and get most of her shopping done at the market.
Susanna has the brains and is the driving force in her relationship as well. Chris manages to catch on to her grand plans just in time to become a part of it. He provided the brute force, while Susanna was safely hidden in Italy running things from her computer. She was thorough enough to make several different plans depending on how things ended up. Chris had no idea- -as I'm sure he would never think that she could/would live without him.
Even Collette demonstrated her power in the relationship with Hunter. I was waiting for her to fall into his arms during the kidnapping. And come to find out, she helped orchestrate it!