Hmm...I just looked up Winx on Wikipedia because I've never even heard of it. It looks...well, I won't use dumb, because I haven't seen it, yet, but from the appearance of the heroines and viewing the plot, I would say the Sailor Senshi would pwn Winx.
And I'm not even going to talk about the bad animation Winx has...:P
I won't vote until I see some of Winx, though.:shy:
~Sugar Baby
EDIT: Okay, I just saw a preview of Winx and it showed them fighting...Sailor Moon and her Senshi would most definitely pwn!