It's probably not that far off.
Stalin's victims are exaggerated by USA and Bush's victims downplayed.
Plus Stalin won the biggest war in history of humankind, took half the Europe under his country as kickback plus made USSR produce at its peak almost 10% of world's GDP.
So of course he had to break some eggs during the process.
Bush got his ass kicked by few thousand primitive goat fuckers, burnt trillions of his peoples money in the process and drove his country in one of the greatest recessions ever.
So his victims are not that well justified.