Specifically he was referring to US naval power. In a previous episode he mentioned by name that "Jane's Fighting Ships" was source for his information. Pretty expensive.
I just googled and found this site which only begs more questions. How is North Korea rated to have double America's naval firepower. Anybody know whats up with this?
If you just go to Wikipedia you can sort by descending and see the US compared to the world total which is what Dan was talking about.