The article this comment section is on is entirely about the united states and the wealthy in the context of the united states.
You would have had to make it explicitly clear that you were talking about something other than the rest of the comments (the whole world) for your comment to be read as such.
Anyway, comparing wealth between the developed world and the developing/less-developed nations is tricky, and needs to be done with care. I don't think using that number in this context is useful.