It's more complicated than that. Emissions in the US, Canada and some European countries are higher (per capita) while some other countries like the UK, Italy, Spain and France are below China. The EU as a whole ranks a bit below China on a per captia basis.
However the other important factor here is the trend line. Most western countries above China in this ranking has a trend line pointing downwards, while China still has a trend line pointing upwards. So if both China and the US continue on their current paths then China will indeed soon surpass the US.
However the other important factor here is the trend line. Most western countries above China in this ranking has a trend line pointing downwards, while China still has a trend line pointing upwards. So if both China and the US continue on their current paths then China will indeed soon surpass the US.