Trump’s bottom line may only have two commas instead of three. Investigative reporter Jonathan Greenberg, who a few years back published a stunning exposé of how Donald Trump’s rise to real estate mogul, sees a critical moment: the steep sums the former president must shell out after losing two civil cases is forcing him to own up to not the billionaire tycoon he’s boasted. “I think he’s far less wealthy than he has claimed,” said Greenberg while appearing on CNN’s “Out Front.” “I think this is his Achilles heel. Want more breaking political news? Click for the latest headlines at Raw Story. A…