On the one hand I don't trust Chinese numbers a lot, but they seem to be at least in the ball park to the actual numbers, and even that is a major achievement c

On the one hand I don't trust Chinese numbers a lot, but they seem to be at least in the ball park to the actual numbers, and even that is a major achievement considering the size of the Chinese economy, its lack of technology in many parts and a bureaucracy which isn't exactly renowned for its "accuracy". In general, if this "PPP" calculation shows China overtaking the US, this is probably happening in "PPP" terms. Doesn't mean they have more economic weight in the world, though.