It seems that aside from the shapes on the the head and clit stimulator, they're basically the same toy.
This happens a lot. See for yourself.
Three different companies selling the exact same toy, just with different colors (and there's at least one more, but as of yet it's not on Eden). Several other examples of "same toy, different company" have come up in the forum, though I'm too lazy to look right now.
I think what happens sometimes is different companies buy from the same manufacturer and just market the toys under different names. That, or everyone's just stealing from one another.