PPP GDP is sometimes called real GDP. What does 'real' mean to you? Something related to ‘reality’ perhaps? Of course, not. For a harsh lesson in ‘reality’ check out the BP world energy statistics. In 2021, China consumed 157.65 Exajoules on energy. The US consumed 92.97 Exajoules of energy. In my world 157 is greater than 92. Perhaps math works differently for you. In 2021, the US produced 4406.4 Terrawatt-hours of electricity. China produced 8534.3 Terrawatt-hours of electricity. In my world 8535 is greater than 4406. Perhaps math works differently for you. Remember what Philip K. Dick said about this “Reality is that which, when you stop believing it, doesn't go away”.