How does Paul compare his grandparents to dad?

What chapter are you referring to?

Hey Aslan anything works as long as he is comparing it's a very broad question

From the text:

"I know, Grandmom." She made some more small talk with me about the cold in Florida versus the cold in Ohio. Grandpop got on the extension, and the two of them asked me about myself—about my school, about my friends. That's one thing about Grandmom and Grandpop—they couldn't care less about the Erik Fisher Football Dream. They never, ever mention it. And when Dad brings it up, they do their best to change the subject.