Yes, it's a huge advantage. It's unfortunate but that's the way it is at the moment, especially if you plan to get much bigger. Europe has very few large tech success stories. Of course if all the successful companies move their headquarters to the USA that will continue to be the case but there are certain very hard to replicate properties of both the Valley ecosystem and the USA in general (access to both capital and a very large audience with one dominant language) that make it an option you ignore at your peril.

Note how it was Accel partners and not some French VC for this round.

There are a number of examples of foreign owned successful companies that appear to the public as a US success story (Logitech for instance, which in fact is a Swiss company).