Well, seeing as how Suri was only being conceived - allegedly - at the time MI3 was filming, I guess Jonathon was deeply inspired by Tom's parenting skills during the promotional tour during her infancy. Right.

Look, it's pretty common policy for everyone in the film industry to make nice with everyone else. That's why Tom bashing Brooke Shields for no good reason was so bizarre. Also, JRM might have been asked very specific questions - "How was it working with someone like Tom Cruise? Would you like a career like his?!" - that led to his Tom-centric answers.