Thanks to Believe In Winx, watch this video(the video was mirrored):
Urgh, apparently, Nickelodeon "forgotten" Charmix, and Season 3 is based on Magic Winx and Enchantix again. Now I get it. The Nickelodeon version is the same with the Rai English and 4kids version. Very easy, just changing the voice. Nick seems to have a very easy time with Season 3.