Does 2+2=1 sound right?

Here is a quote from an article in The Guardian - a British publication.

The three richest people in the US – Bill Gates, Jeff Bezos and Warren Buffett – own as much wealth as the bottom half of the US population, or 160 million people. 

Analysis of the wealth of America’s richest people found that Gates, Bezos and Buffett were sitting on a combined $248.5bn (£190bn) fortune. The Institute for Policy Studies said the growing gap between rich and poor had created a “moral crisis”.

What are we to make of this?  Is it credible?

Let's see - Divide $248.5 billion by 160 million - you get $1,550.  Is it credible that the average wealth of the poorest 160 million US citizens is only $1,550?  No.  What does this imply?  That neither the Guardian nor the Institute for Policy Studies is credible.