User blog comment:Nhan-Fiction/(Champion Remake) Fiora, the Grand Duelist/@comment-1330314-20131229172717/@comment-1330314-20140103082322

Yes, dominated the game for a long time and is still strong, but not because he deals true damage on his abilities. The argument I'm trying to make is that flat armor penetration would make Fiora overwhelmingly strong against squishies, but affects bruisers minimally. Percentage penetration (or reduction) would still grant more kill potential against squishies, but would allow her to fare a lot better against tanky champions. Having the bonus apply as an on-hit effect instead of a simple damage boost to her gapcloser would also synergize better with her kit.

Generally, the argument "X does this, why can't Y do this as well" doesn't go very far, since every champion is supposed to have a unique skillset that caters to a specific set of strengths of weaknesses particular to them. , for example, has no inbuilt sustain, poor multi-target damage and a vulnerability to enemy sustain and strong defense (opponents who can out-tank or cleanse his will win against him). Fiora, by contrast, is one of the fighters with the biggest amount of teamfighting potential. If you want her to be stronger in a healthy way, I suggest you go more in the way of on-hit utility than marksman-annihilating burst.