Kassadin Nerfs

Lately Kassadin was getting nerfed here and there and with the latest base armor and armor growth nerf you can't win agaist any ad hero in the lane, i get it Kassadin is an anti-mage and is a counter pick but still even against most ap heroes (syndra,leblanc,ahri,zoe,diana,akali etc.) you still get bullied like hell and get pushed under tower but i see Kass high up on tier lists and win/pick rate lists. am i just bad ?