I guess we can say they both (and the rest of Marie's brothers) look very French
. Joachim is half-French so that's no strange of course. All of his sons look a lot like him too so again, no mystery.
As for them looking European
what is that look? IMO - as a European - we can look very different depending on where we come from. Sometimes it feels as if non-Europeans forget that Europe is quite diverse. Certainly Scandinavians look quite different from people from Southern Europe who look different from people fro Eastern Europe. Culture, style, ethnicity - there are 51 countries in Europe so which one is the defining look, I wonder? Just try watching a bit of Eurovision - it should be quite obvious, how there's no such thing as a European look