Something similar has happened every year. Last year Ruth was on the losing side 7 times out of 10, and for four of them she was also in the boardroom, and for one of them she lost as PM. Yet she was a finalist, and many people thought she should have won.
The year before, Saira lost 6 times out of 10, including both times she was PM, was in the boardroom 3 times; and she was a strong finalist too. I think a lot of people were surprised when Tim beat her.
By comparison Katie was on the losing side 6 times out of 10, was only in the boardroom twice, and won both times she was PM. So according to that, Katie performed better than both Ruth and Saira. She would have been a strong finalist too - much stronger than Simon in my opinion.