Why is French food (cassoulet, quiche, beef stew, etc) considered the best in the world when Mexican tacos, Italian pizza& Spanish paella is as good?

Why is French food (cassoulet, quiche, beef stew, etc) considered the best in the world when Mexican tacos & burrito, Italian pizza, Spanish paella & Indian curry are as good if not better than French food?

I have already tried the 2 most popular French dishes: Coq au Vin ( which is chicken marinated in wine) and Boeuf Bourgignon ( which is basically beef stew) and dishes from other countries like Kentuky fried chicken (KFC) (which is American), pizza (which is Italian) and tacos (which is Mexican) and I much prefer KFC, pizza and tacos which are much more delicious and tastier than the 2 French dishes So I don't think French cuisine is the best cuisine in the world. French cuisine is very, very overrated Italian, Mexican and Asian cuisine is as good if not better than French cuisine and French dishes.

Why is French food (cassoulet, quiche, beef stew, etc) considered the best in the world when Mexican tacos, Italian pizza& Spanish paella is as good?
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