But your really can’t. GDP per capita doesn’t capture so many parameters and conditions (like being landlocked surrounded by wealthy countries that use you as a de-facto tax haven)
It’s not GDP/per capita, but total GDP. To say the USA earns more of its GDP from natural resource extraction than Finland does is completely meaningful if the claim being shot down is “Finland can only afford these programs (and the USA cannot) because of all the money they are making from natural resources.”