User blog comment:NeonSpotlight/NeonSpotlight's Balance Changes/@comment-4881935-20130610021020/@comment-3308937-20130611030447

Might as well just cause his ult to increase his damage dealt by a % instead of adding more scalings.

Giving AD ratios would mean having to reduce his base damages or the amount of AD given by his ult which would just weaken most Ali builds when his ult is down.