I can speak for Italy, but bare in mind two things. First, I am an economist, interested into wolves because of side projects (i.e. the connection between the increase in the wolves population and local tourism) and sheer passion for nature. Second, the Italian wolf is different from the Eurasian wolf, which is more common in Europe, while the former is mostly in Italy, and in part on Swiss and French Alps.
To my knowledge, the danger to humans, from Italian wolves, derives mostly from two interrelated aspects: (i) proximity to towns; (ii) hybridization (see here and here for evidence of hybridization in Italy). Because of those two factors, a higher percentage of local wolves might be less afraid of humans and, thus, more prone to come in contact with them. Besides that, I am not sure I have heard of average differences in behaviors.