In the short scale, you'd be right, but the author probably uses the long scale.
See http://en.wikipedia.org/wiki/Long_scale#Comparison.
It's one of those things that makes English ... interesting to learn as a foreign language. :)
EDIT: Actually no, I mis-read the table on the Wikipedia page. The author was simply mistaken, and has corrected that. Thanks to everyone who pointed this out.
It's things like having three different "gallons" that all mean wildly different things that make communication difficult.
It sounds so strange. Are you sure this isn't another Wikipedia hoax masterminded by Stephen Colbert?
Source: your link.
There was another screenshot which has an account balance in the trillions that Blizzard argued was fabricated. Given the ease in which this trick was performed, I wouldn't be surprised if it was authentic.