If we're solely talking about political ideology then yes the US is without a doubt much closer aligned with Europe than China. On trade, however, it gets more complicated. With the increasing mercantilist attitudes in the US and attacks on say, German car manufacturers there is a real issue of Europeans being dependent on the US. If the US increasingly sabotages international institutions and throws its weight around for what appear to be short-term domestic gains it will become more and more unattractive to cooperate.

China, while diverging much more on political or humanitarian issues, is a much more globally connected economy. The Asian-European trade already dwarfs the European-Atlantic trade, and that is only increasing, and China has very little incentive to change that deepening integration. I'm a sceptic that liberal values alone (which also seem to be in somewhat short supply today) outweigh the deeper trade relations between Europe and Asia.