This.Shiirn wrote:
AP sion is very powerful on SR due to his very strong harass and absurd farming abilities (he can push lanes to tower with doubled waves and go gank other lanes), but falls off later on when consistent dps rules.
AD sion is the exact opposite; he needs tons of farm and tons of babysitting time earlygame to be able to utterly annihilate everything endgame (100% lifesteal for 20 seconds. That heals your nearby allies. Need more be said? also infinite hp scaling)
Only real counter to AD Sion endgame is some kind of burst, not letting him really do anything. If he's already engaged on the battle, there's little you can do when he is criting like a boss and healing 100% of his health.