interesting to see something similar in Bavaria. I don't think they're the same tradition...I'm more prone to thinking that from similar backgrounds come similar things.
Although it's an island, most Sardinian culture is from the innerland (shepherds mostly), field, animal breeding (sheeps, but also pigs, cows, and so on), so even masks and folklore comes from that. The other mask in the first set of pictures, instead, has a deeper and darker background and, still today, they are quite scary. There's also a variant (same name, another village) which reproduces some sort of Dionisiac ritual...yes, anthropology is a fascinating topic...