Earlier quoted context omitted.
It’s not really a fair comparison. In terms of where people actually live (the upper two thirds of Sweden is almost empty) its roughly comparable to Ohio: about ten million people clustered in 4 or 5 major cities within a few hours drive distance from each other. Of course it will be easier to provide superior rail service there. This is not so say that Ohio has its act together as far as public transit is concerned…
I think their point is that one city (SF, not the entire US) took 20 years to get trains that Sweden had throughout their country 20 years ago. Their comparison is actually worse for the US than comparing the entire US train system (ha) to Sweden. That's really sad.
Comparing long distance train service to Bart would be weird.