I would expect people to react mainly to the part about the IMO gold medalist, even though the base rate for being an IMO gold medalist is higher than the base rate for authoring the most-reviewed Harry Potter fanfiction.
This is true, but the reaction is for the conjunction of IMO Gold Medalist and moset-reviewed HP fanfic.
This is true, but the reaction is for the conjunction of IMO Gold Medalist and moset-reviewed HP fanfic.