Vs all AP comp 
= auto win
Vs all AD comp 
= probably isnt going to help at all
Why is it that when you build a and a you still can not manage to kill the enemy adc but when just about anyone builds one Mr item they become a nightmare for any AP champion.
Jamaree3 votesBecause AD damage is sustained while casters are set to a rotation.
ModWulf Helhammer2 votesBingo.
AD damage (although really I know you just mean ADCs OP) are sustained damage class. They are meant to take down heavy targets. Mages (and pretty much all AP except for a few niche cases) are not.
Moonfall Saber1 votes
are not sustain damage
ModWulf Helhammer2 votes3 of those are absolutely, 4 more of them are dependent on play style and build, and the rest of them are burst.
Stop exaggerating. It's not helpful to any kind of of meaningful discussion, and only shows your willingness to fudge the proof to get sympathy votes
HP Crookshanks2 votesBecause AD champions and items are stronger like as always. The only reason that AP champions are picked because enemy won't build full armor.