I feel like a lot of people are voting Pat solely off recognition.
^ I can say with 100% certainty that is NOT the case with me. I've listened to Kate. She does absolutely nothing for me and never has. I had friends that listened to her in college, back when she was hitting her peak of popularity, never cared for any of it. Her brand of goofy pop music grates at me. Between the songs (that are boring to me) and her voice (that I find annoying) and the delivery of that voice... I can't get through a full song without skipping. I've tried, I really have. Can't do it.
On the other hand, Pat has appealed to me since I first heard Heartbreaker. I've seen her in concert a few times and she never fails to deliver. I love the rock that she does and even the pop stuff that she does. I'd take the worst of Pat's pop over the best of Kate's pop (whatever that may be).
As an artist, Bush dwarfs her in comparison and it’s not even close. Benatar never made a record close to the quality of Hounds of Love, The Dreaming, or even Kick Inside.
In the Heat of the Night
Crimes of Passion
Get Nervous
Precious Time
I'd take of those three played at the wrong speed with a bad needle on warped, scratched vinyl over the best that Kate has to offer, any day, every day.
Just my 2 cents worth on the topic. That's not to say that I'm write and anyone who doesn't agree is wrong, just painting my opinion with a colorful brush.