I actually saw a pretty informative data sheet made by Pbhuh
here.
The most notable examples are
Denmark - 0.6 Million - Ingame: 128 dev - 213 dev/million
England (wales and england) - 2.5 Million - Ingame: 246 Dev - 98.4 dev/million
Hungary - 3 Million - Ingame: 176 Dev - 58.6 dev/million
We can already see Hungary falls far behind on this scale. Here's a few comparisons in East and Southeast Asia on top of that.
Japan - 8 Million - Ingame: 372 dev - 46.5 dev/million
Korea - 8 Million - Ingame: 130 dev - 16.25 dev/million
Khmer - 1.2 Million - Ingame: 85 dev - 70.8 dev/million
Dai Viet - 8.3 Million - Ingame: 119 dev - 13.25 dev/million (Post-Champa conquest and the White Elephant War)
Malacca - 0.15 Million - Ingame: 72 dev - 480 dev/million...?
Already we can see that Korea falls behind every single nation on this list bar Dai Viet and even then by not much. The European nations, including Hungary, all soar far past Korea, with Denmark having more than 13 times the amount of dev per population.
Even if the exclude the European nations though, the Asian nations also leave Korea in the dust, with even Khmer, a crumbling empire on its death throes having more than 4 times the amount of dev per population. (Further note that Khmer will recieve 6 new provinces this patch, and hence a dev
buff) And don't even get me started on how inflated Malacca's dev is. At least they're getting split in this patch.
Dai Viet is the sole nation behind Korea, but will recieve 2 new provinces upon start with the new patch, while Champa will recieve 3 more, meaning their aggregated dev will be much higher, considering how Dai Viet's provinces are much higher dev than Korea's (9.87 dev/province VS 6.5 dev/province)
Another note that Manchuria has more than double the amount of dev that Korea has at 308, while most likely having a smaller population that Korea did. Probably helpful, considering how tag shifting to Manchu is optimal for Korea, to escape the awful events, get better ideas, AND get a better misssion tree.
Even the Interlacustine minors start off with better development density than Korea. The provinces of Buganda and Nduga start off with higher dev than Hanseong, because... well, who knows, korabad.
Fuck it, even New Zealand has better provinces than Korea, and Paradox didn't even bother to represent the Maori living there.