Game work that way
RGO output = population x techs+inventions x infrastructure
When China westernize, they usually are top1 producer of basic good due to large population.
For example iron mine in Chengde have 1,5 mln workers -> usually this same amount as half of Europe
First my comment about China was at the start of the 1831 scenario they produce 4X they production of the leading European producerl!
So we have a game where resource production is based on nothing in reality yet pretend to reflect the world of 1831-1921.
This is what is wrong with historical simulations that cannot even get the facts right for the period. It takes so little effort with google today.
Minor issue shows me you have very little understanding of economics and what made European powers so powerful and able to raise such effective and large armies. Technology and resources meant power. This game then is like playing a Steampunk version of a very interesting period.
Edit: You can mod game -> history/provinces or history/countries. Remove rgo coal from france, and remove their techs.
Honestly for me is a minor issue who is producing more coal, or sth
Quess that could work but it just means their is too little coal in production.