User blog comment:Leyrann/Hard counters./@comment-81.200.170.248-20120803232436

In many cases deviating from an "ideal" build to counter the lane matchup sets you back mid/lategame enough that it's pretty much a loss in itself. Well, unless it forces the opponent to do the same obviously. Also that's the reason you want an well balanced team comp to begin with and usually to have a jungler with a damage type different than the top lane.

That's why for example Malphite is a counter against Fiora. He want's to have a Tabi and Frozen heart later anyway, Fiora on the other hand want's stuff like brutalizer and phage for killing the enemy carries later.