Here's a सूची of reasons that don't count out of the first 500.
Reasons that are purely opinion, untrue, या just ridiculous.
I didn't include all the reasons I think are wrong, to be nice

12. Twilight WILL fad out it is a fad and many प्रशंसकों are on it because of the Bandwagon effect and because Robert Patterson is good looking But Harry Potter will be around forever
17. Harry Potter can be read द्वारा any age group. Twilight is geared और towards angst 15 साल olds.
18. The characters in Harry Potter GROW, they grow with आप as आप read. The first पुस्तकें start out fairly tame but mature as आप mature....