Here's why:
* The books are about social dynamics and adolescence: The series centers on Greg's awkward experiences navigating school, friendships, and family. Physical strength is rarely a significant factor in the plot.
* Patty Ferrell is a bully: While she's physically larger than Greg, her strength comes from her intimidating presence and bullying tactics. She's not portrayed as exceptionally strong in a physical sense.
* Holly Hills is a typical teenage girl: She's not depicted as particularly strong or weak, and her relationship with Greg is more about their emotional connection than physical abilities.
Therefore, judging "strength" in the context of the Diary of a Wimpy Kid series would be misleading. It's more accurate to consider their personalities, social influence, and how they handle different situations.