That's per-capita. China is by far the biggest polluter overall, and it is still increasing.

https://ourworldindata.org/explorers/co2?country=CHN~USA~IND...

Wouldn't you expect the country with the most manufacturing and one of the biggest population to also have the biggest pollution?

I feel you'd need to adjust the sum total by something, capita, or square footage or be more specific like does a manufacturing X in China pollute more than an equivalent one in the US, etc.

Hum... GDP doesn't seem right to me.

Not all goods and services involve the same process, some come with more pollution.

For example, Nvidia will contribute to a big chunk of US GDP, but it only designs the chips, which won't have the same pollution impact as the country in which they'll have it manufactured.

Hum... I bet anything that criticizes China over the US won't seem right to you

Not at all, but it just feels like the emperor's new clothes if we just pretend we're doing better and aren't objective.

Doesn't really make sense in my opinion. Why boycott a specific group of people for their collective emissions when their individual emissions are lower than many others? The latter is the important metric, else you're simply punishing them for having a large population.