User blog comment:TheTobarMethod/Umm Ezreal......so your a carry?/@comment-99.229.45.199-20121227160507/@comment-4794115-20121227234817

I think what OP means is that in the late game, the cast time of using an ability ends up costing you damage rather than if you were to AA.

Sure, buckshot does more damage and resets the AA, that's great for early. But when you get AS, that casting time could take up two or three AAs, especially with quickdraw active.