Hm that could be interesting–same curse, different reason to cast it–but perhaps WWW originally wrote that curse to get to Dorothy but Regina obtained it (guided no doubt by Rumple to do so) and that is why WWW wants revenge on Regina for stealing her curse. Remember Malecificent said, whoever wrote it made them look positively moral.
[adrotate group="5"]
“If I had a world of my own, everything would be nonsense. Nothing would be what it is, because everything would be what it isn't. And contrary wise, what is, it wouldn't be. And what it wouldn't be, it would. You see?” -- Lewis Carroll, Alice's Adventures in Wonderland & Through the Looking-Glass