The lower ranking is total mileage tons while the highest ranking is percentage of freight moved by train.
The US ranks decently high in passenger miles as well, but that's just because we're a huge country, not because trains are regularly used by people in the US.
I guess I should have used a different word but I meant huge to imply a large population as well as area. The US is the 3rd most populous country in the world after all.
But whatever the actual ranking, the volume of rail freight is very high.