Based on this hard data, I expect I could figure out effective policies 4x faster than the average government if given dictatorial control over Argentina.

I think people underestimate the effect of East-West Germany or North-South Korea style examples for making a point about which policies work better. It is clearly no mystery what policies generate wealth. The US has had this figures out for a while now, you just need to look at the different states to figure out what policy mixes work. I bet that is politically inconvenient for the people pushing destructive policy so they then try to bring their ideas in federally.