I think your source [1] is directionally correct but very wrong on the numbers. (It's also a decade old, but that doesn't explain these errors.) For example, it says (last sentence) that Americans average 6 tons per person per year. It's actually around 15 [2]. Also, the densest urban cores have per household (and person) carbon emissions ~half the national average. Here's a recent NYT [3].
But it’s not less than, say, someone living off the land without electricity and subsistence farming.
Maybe among smallest in the world for a large city?
1. https://www.livescience.com/13772-city-slicker-country-bumpk...
2. https://www.theguardian.com/environment/2009/mar/23/city-dwe...