I find it weird to report on this like it's a race or competition. His net worth bump right now is entirely due to rash market speculation and the recent tech bubble. When the crash comes (and it will), AMZN could easily be down to $500 in a week, and he'll just be insanely rich again.
And the tech stock market crashed in 2000-02. We're back on a rebound, especially in the past 5 years. Bubbles burst, it's literally the one reliable law of markets since the advent of joint stock companies.