I agree. The gun commentary triggered my skepticism, but this is what really pushed me over the edge:
> And US teenagers are twice as likely to die in car accidents than their peers abroad.
As of 2013, the average driver in the UK drove 7,900 miles[1]. The average driver in the US drives 16,550 miles[2].
It should be no surprise that people who drive twice as much die twice as often while driving.
As for guns - I'm interested in figuring out what the actual per capita and absolute numbers are, but don't have time to dig that up at the moment; I know from experience that it's very difficult to find and verify information about "gun deaths" in the US. In the past I've found that anti-gun groups have lumped in people as old as 24 as "children", while pro-gun groups have excluded justifiable homicides including those occurring during law enforcement activities. I may come back to this, if anyone is interested and I have the time.
1: http://www.bbc.com/news/uk-england-28546589
2: https://www.fhwa.dot.gov/ohim/onh00/bar8.htm