Germany is seeming to do ok. They have a low death rate, so they either are testing lots and capturing more infected then most other countries, or their medical system is doing very well
The world knew about the virus in early Jan. We saw China quarantine Wuhan on Jan 22 or so, then Hubei province the next day, then shut down most factories across the country very soon after. The US did not really respond regarding social distancing, or getting medical supplies until cases began to skyrocket in New York. It was reactive, not proactive. No doubt Italy, Spain and a few other European countries did just as if not a worse job planning and responding to the virus. But to say and accept the US was the most prepared country should mean it would have had the best response. It did not, it was not the government that shut down the sports leagues (social distancing) the government did not attempt to buy more medical supplies in Jan, Feb or early march. One will notice that there are plenty of masks for civilians in South Korea, China and Japan. The world saw China build two hospitals in two weeks as a response to the virus, yet no other country decided to be proactive and get a stockpile of potentially needed medical supplies
The US, Italy and Spain did a very poor job regarding the virus. Italy and Spain are not typically held up as examples of having good governments.