Poppy AD scaling

Why does Poppy a tank have a total of 270% AD scaling on her Q and E, her Q alone has 180% AD scaling for a tank, that is an insane amount of scaling, her E has 90% if you hit the enemy into a wall, which lets be real is quite easy, with just a single item like duskblade and then building tank, your damage will sky rocket, that is not balanced at all, tanks doing dmg is fine, if it requires you to really build into it, im pretty sure her AD scaling on those 2 abilities is higher than some assassins or bruisers whole kit. And im trying to figure out why.