They're fighting over how much the Saudi Arabian prince is worth.
Alwaleed believes the number is a $29.6 billion, while Forbes disagreed and placed him at number 26 on its annual billionaires list with a net worth estimate of $20 billion.
Regardless, Alwaleed is still rich beyond belief from his stake in his Kingdom Holding Company, his Saudi real estate investments, shares in Arab media companies, and investments in public and private companies globally, including Twitter.