Earlier quoted context omitted.
In that case I wouldn't trust any country not to fudge the numbers. As far as Japan goes, I believe the numbers are close enough. They have a very high population of elderly and smokers. People would be dropping like flies and making a lot of noise about it if the numbers were far worse. Social distancing, wearing masks, staying home when sick, cleaning all fomites frequently are things the Japanese were doing before…
Japan had been under-testing and under-reporting to save their face -- or the Olympics. As recent as last week, their health official confessed they had a testing capacity for only 200 per day in Tokyo. Japan's case number and death started skyrocketing since the Olympics postponement on March 24 and nobody thinks it's just a coincidence. Also note Japan has a large elderly population, or about 32+K, who die unnotice…
Testing isn't even useful at this point, we should operate under the assumption everyone has or will have it, and just treat those who are having complications. You don't need to get tested to know you have a cold, just deal with it.