I think your numbers are also way off, wikipedia cite 16t CO2 emission per capita (and not household) in the USA.
https://en.wikipedia.org/wiki/List_of_countries_by_carbon_di...
https://en.wikipedia.org/wiki/List_of_countries_by_carbon_di...
I'm sure the numbers vary depending on what middle ground you choose. Here's another number that's higher than yours or mine - 48t CO2/yr: http://css.umich.edu/factsheets/carbon-footprint-factsheet
Atleast the different numbers I see are off by much less than the GP's claim.