Well, that and the differences in the setting/magic (there's no Free Transfiguration in canon, for instance, and the Mirror is different - there are less Mysterious Ancient Artefacts generally - and Horcruxes run on different mechanics ... stuff like that.)
And Voldemort is just inherently smarter than everyone else, too, for no in-story reason I can discern; he just is, it's part of the conceit. (Although maybe that was Albus' fault too, somehow?)
This is a new thread to discuss Eliezer Yudkowsky’s Harry Potter and the Methods of Rationality and anything related to it. This thread is intended for discussing chapter 119.
Plans for next chapter release:
There is a site dedicated to the story at hpmor.com, which is now the place to go to find the authors notes and all sorts of other goodies. AdeleneDawner has kept an archive of Author’s Notes. (This goes up to the notes for chapter 76, and is now not updating. The authors notes from chapter 77 onwards are on hpmor.com.)