It's insanely stronger on its core users.
up to 24% boosted AD and AP on full stacks + .1 modifier to each damage type on on hit made its on hit mechanism the strongest in the game. It now does stronger on hit damage than these.

can compete, but that's ALL it does for the most part, and primarily vs high HP teams.
On a champ like
it's absolutely monstrous. Her Auto attacks hit at least twice, and can hit up to 3 times, each carrying her on hit damage. In a realistic build, the old Ginsoo's only boosted her about 63 damage per hit before considering other items on hit bonuses. The New Ginsoo's adds up to 243 per attack damage, if Kayle is attacking a group, and the primary target is near a secondary target, they splash over and she hits 3 times per auto. Some of the fastest deaths in the game, and there's nothing you can do because of her Ult.