I talk to our cat way more than my wife does...and our cat talks way more to me, in return. I'm also the one that gives her more attention in general, including feeding and petting. She sleeps with me more. Follows me into the bathroom more. My wife says she's "my cat", not "hers".
But, it is true that when she seeks attention from my wife, she doesn't ask for it the same way...she just sits there and stares at her. With me, it's all purring and meowing and headbutts. With my wife...just eye contact.
So, this is an interesting study, although I'm not sure about the conclusion.