system
Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter] Why do different brooms move faster than others?

Additionally, why are house teams allowed to have better brooms and not have a standard to make it more fair?
gpt
Brooms do not follow the newtonian laws of motion.  They move and are powered entirely by magic.  The reason some brooms move faster than others is the same reason a potion made by Snape is gonna be more potent than one made by Neville, or why a Bat boggey hex by Ginny will be stronger than one by Draco.  Some people are just better at magic than others.  That said, a broom is far more complicated than a single spell and requires multiple enchantments to make work.  That's why you get generations of slight improvements (Nimbus 2000 vs Nimbus 2001) rather than just a few of varying quality at once.