User blog comment:Care Level/RE: PBE Riven Nerf/@comment-3232747-20131219045644/@comment-4952847-20131219102623

Total AD ratios are not necessarily superior to bonus AD ratios. Riven here needs to reach level 8 for the Q damage to be on par with the original with 0 bonus AD. At level 18 it will deal less damage when Riven has more than 220 bonus AD.

This nerf doesn't impact her late game so much, but it removes her early game power spike so she will be harder to snowball with.