Apparently they are both using the Italian word for Giraffe for the side shifting models.
I would find a Maschio dealer to be sure about the country of origin as Fleabay makes lots of mistakes about the stuff that is sold on their site.
MAschio always lists Italy for the point of manufacture for their farm equipment.
That makes more sense. Both Peruzzo and Maschio look like quality flails, with Maschio being heavier when comparing similarly equipped sizes between the brands. I assume the frame and deck are thicker on the Maschio flails, or maybe just a heavier duty mower overall.