The US is undoubtedly ahead at the moment, but the point is that this moment is developing into a turning point where the US is reducing science funding while simultaneously being openly hostile to both scientists and very concept of science itself. If US scientists feel this not just a transitory bump but a genuine change in the political climate going forward, then Europe is going to look inviting, especially if they start offering incentives.

Hmm...Wikipidea says "$135.110B in R&D spending" for federal funds.

Now that was 2015, but the number is very similar the EU figure of €136 billion.

There will be be differences, but the point stands that comparing the tiny delta provided by this specific program to total spending is not serious.

Right; that's the federal government spending, while the other's combined R&D from all sources (aligning with 'mpweiher 's comment and their metric).

The nsf.gov page has a breakdown table, too, of government vs. industry spending.

That turns out not to be the case. The €136 billion was EU + national governments.