User blog comment:NicknameMy/My Sion Rework, every Sion viable/@comment-5592451-20130312165458/@comment-3493296-20130314173027

Lets look at his spells again:

Q: A bit of a buff for AD Sion, for AP Sion it depends onto the situation. Offers new strategiecly options,

W: Shield: No real change for AP Sion, buff for AD and tank Sion

Damage: No change

E: Buff for AP Sion, not that big impact for AD or tank Sion

R: Definitly buff for AP Sion, giving it any use for him. For AD Sion, a so so change.

So, all in all, both AP and AD did grow in power, mostly at spells they wouldn't even look at before. This evens his kit out for AP or AD to use.