I'm not unduly worried as I don't believe the world will run out of Americans any time soon.
I once saw something similar comparing the number of words in the Lord's Prayer, the Ten Commandments, The Sermon on the Mount and the EU Umpteenth Directive on the Export of Duck Eggs, but I have since been informed by the wonderful QI Forum that this is bunkum. It was a US Directive about cabbages...
DM