Those numbers mean nothing. First of all, anything before maybe 1900—1950 is meaningless, as no one was collecting data about how people actually lived. They are only estimates based on national fortunes, for periods of time when many people mostly lived off the land.

The poverty line is also arbitrarily low, with many countless people over the poverty line who are dying of hunger. A more realistic poverty line would probably be several times bigger than the current value, which would fuether skew the numbers.

Not to mention, as others have pointed out, the vast majority of people taken out of poverty were taken out by dictatorial China's social programs, not capitalism.