It's simple , you guys remember how pb sasuke and sailor sakura are being removed from events rotation recently ?

I suspect it has to do with their models skins, meaning they show too much skin / *ual inuendo for a chinese operated game suposedly for children.

To do this re-skin they used the skillbreak system as an opportunity to remove all those elements that could lead to possible censorship or legal problems.

Buffing them through skillbreak i supposed is to counter the way they look now all bland and boring.