The worst countries for energy use per capita are mostly middle-eastern oil and gas producers, and places that are very cold and energy producers (Iceland, Norway, Canada), and for some reason Singapore and Trinidad and Tobago.
If you look at just fossil fuel use per capita the picture is slightly different. Iceland drops way down the list. They use a lot of energy, but it's mostly geothermal and hydroelectric. After the middle east, Singapore and Trinidad and Tobago it's USA and Canada at the top. Canada is basically USA with cold winters. Then it's South Korea, Russia, Australia, etc.
I think what they mean in this case is "the average person", i.e. divide all the CO2 produced by 8.2 billion. Since half of those people live in massive poverty and have virtually no carbon footprint, the per-person number is much less than any Australian, Canadian, American, etc.