@Lash,
Now that you're asking, it didn't bite on me much, although I made a note of the viciousness of the attack. Here was a woman trying to ridicule a man who happens to be a fairly decent, modern and equality-minded man in his relations with women, saying he'll be a nice little boy to mommy Merkel, and thus implicitly casting a faithful husband to a woman 20 years older than him, a defender of feminist causes, etc. as submissive to women...
The main reason it didn't bite was that it came after a long grueling exchange of previous insults. Le Pen's ad hominem ad aeternam, if I may crack a Latin joke, gets old. She's applying to a bigger job than chief hatemonger. So when the 1869th insult come your way, you're kinda dulled a bit already and it doesn't bite anymore.
Plus I prefer Merkel to Le Pen by far, personally... So it doesn't even resonate much at a basic ethnic (nationalistic) level.