Justice and Rule
Legend
Chult always felt more Amazon Jungle to me.
I mean, it always felt "generic jungle" to me, but given where it's at and the descriptions given, I feel like it's meant to be Fantasy Africa.
As compared to....?
You mentioned Warhammer earlier. How are Tilea and Brettonia and and the Spanish place different other than via the indication that they are based on different historical European regions? Or all those setting that have 'here be vikings' in them. How much depth and research usually goes into presenting those vikings (and how often are Vikings placed alongside cultures that are historically from a much later period*).
I feel like this is a bad argument to make. You can argue about how well they portray what they are imitating, but Bretonnia is absolutely different culturally than Tilea; we are comparing Italian City-States to pseudo-Arthurian myth by way of France. Estalia is a bit harder to argue because it's more of a blank slate, but Tilea's mercantile and more secular bent compared to the strident religiosity of the Empire is absolutely something unique and different. If we want to go further east, we get Kislev, which has a unique social structure given that it has two specific cultural groups that coexist within it. At this point, we start combining a lot of Eastern Europe together, but at the least we can argue that it is culturally distinctive.
Compare this to Kara-Tur, which gives the exact same advice on how all people work, no matter their nation. They share social structures, language, calendar, etc. There's no "China" or "Japan", there is just "Asian" with a Chinese Emperor or a Japanese Shogun. Like, if you want to tell me that Kislev is a bad attempt at fantasy Slavic cultures, I'd be willing to hear you out. But it's at least recognizably Slavic, unlike Kara-Tur in Oriental Adventures which is just homogenized East Asian stereotypes.