This suggests that the US is now somewhat above the median in COVID-19 case detection. Our testing is better than much of Europe, and we're picking up a higher share of infections than they are.

https://www.wsj.com/articles/why-we-dont-know-how-many-americans-are-infected-with-coronavirusand-might-never-know-11586005200

To take one salient example, per these estimates, the UK probably has about 2x as many infections per capita as the US, even though the US has more *reported cases* per capita.