User blog comment:Nhan-Fiction/(Champion Remake) Fiora, the Grand Duelist/@comment-1330314-20131229172717/@comment-1330314-20131230073614

is better than because of her utility: if Fiora or Riven snowball, they both do really, really well (in fact, Fiora could probably outdamage Riven), but whereas Riven can still fall back to a bruiser build if behind and rely on her crowd control, Fiora becomes useless if her damage is too low.

While I do agree she needs something more, I think what she needs is better inbuilt utility, not more damage against squishies. Fiora's laning phase is one of the strongest in the game, especially against more fragile champions, and adding flat penetration to her Q gives her even more of an advantage against them (percentage penetration would work better against tanky enemies and would avoid melting squishies).