Yes, that is shown in the study where the author makes a link for the claim. Figure 2 of [1] even shows this, and by eyeball alone it looks like it is closer to 4X more. The point I'm trying to make is that the people who published this graph, who cited the original study, are saying that the total number of fatalities appears to be more impacted by the total miles driven rather than the rate. I tried to dig up where the comparison of miles driven is made but was unable.

In any case, the principle point is that while you are correct that American's have a higher fatality rate, if we are also driving significantly more then that could be a bigger problem. If we have 4X the rate, but 10X the miles, it would seem reasonable to say that the distance is the biggest factor.

[1] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4112220/#SD1