Mythic/Hextech exclusives skins not worth it?

So on my account I have Dreadnova . I worked really hard to earn this skin, I mean hours of time and many monies. And I feel like i got duped. The only thing that I feel is exclusive is the backing animation everything else is the same. I figured there would be something special about them, like special animations, or at least a new voice. but there just wasn't anything that made me think "oh I've got to have this skin" . I would just like to know if this should change. I would like to know what you think.