If Access to Health Care in the US is so great, why is infant mortality worse than in Cuba and they score dead last in every Health or Life Expectancy Metric among the G7?
There is also the practical matter that the US is a continent-sized country and regional effects matter. Some US States have life expectancy on par with the best European countries despite the anomalously high fatal injury rates among young people.
In terms of actual medical outcomes -- survival rates for cancer, cardiovascular events, trauma medicine, etc -- the UK is quite a bit worse than the US. The only countries that stand out as consistently competing on medical outcomes are France and Switzerland.
We also have a small problem with fentanyl.