There’s no basis to assume that either conversions or attacks on women were more prevalent for Jews in either Spain, Germany, Persia, France, Iraq, Yemen or Morocco more than by or on Jews elsewhere.
In fact, Jews were despised and persecuted that there was little incentive, and much to lose, for a non-Jew to become Jewish. And as a historical reality there was relatively very little conversions to Judaism in the Middle Ages when Jews were being severely persecuted and converts to Judaism often faced execution at the hands of the gentiles for converting.
What is interesting is that several years ago scientists determined that 20% of modern Spain’s population descends from Spanish Jewry.