I don't think its soft power, its hard power, pure and raw hard power. US has 5-6 times higher GDP per capita than China. Entire US + EU combined has 60% of world GDP. The fact is these western countries are significantly wealthier than China. Then there is the overwhelming military dominance of US and the west for several centuries. Its no wonder stereotypes form.That is western softpower which some people here argue that chinese softpower isn't important
Negative stereotypes about China and Asians will not change until China becomes atleast as wealthy as a western european country. Their total GDP should equal US + EU combined. And no, PPP per capita will not count when it comes to people's perception, it has to be nominal GDP.