[{quoted}](name=Saixos Yewark,realm=EUW,application-id=3ErqAdtq,discussion-id=mpEmhdXn,comment-id=000000000000,timestamp=2015-03-27T00:17:24.903+0000)
AD fizz will nearly always build BORK, causing him to deal 8% current health as physical damage and 8% missing health as magic damage. That's a massive amount of damage, and split between the two in a way that makes it difficult to itemize against him due to hybrid damage.
Counterplay to AP fizz? You can counterplay him via itemization (banshees, zhonyas, qss, GA), dodging his fish either with flash or a champion move (Avoiding the fish cuts fizz's AP damage immensely),
or forcing him to use his e to gapclose/avoid one CC and then hit him with another. Most importantly AP fizz is far squishier, so if he makes a mistake/you outplay him it's easier to capitalize on. High risk high reward. While the extent of the risk is arguable, it is certainly more risky to do so with 2000 hp than with 3000 hp. And AP fizz has issues VS tanks (which with the current meta are on the rise), AD fizz...not so much.
Look if you don't know this yet,it's time somebody told you this:
counterplay very rarely lies in itemization,or builds(this isn't dota),a champion has a standard build path which he just can't deviate much from,say you are playing lux vs fizz,you wanna rush zhonyas?qss?ga?banshees? for the carries(ap and ad) and to a lesser extent the support(not the tank ones) these items are very late game and most of the game will be played without them,sure if they manage to drag it long enough then it's fine,but very often they won't(in fact most games are decided early-mid),and fizz will get completely out of control with absolutely nothing serious(no,if your adc is behind and isn't doing much damage now is not the time for GA) which can be done about him.
as far as the tanks go,he won't build mpen,so some mr item+attack speed reduction(randuins/frozen heart) are good options,sure they won't cripple him,but most bruisers deal solid mixed damage regardless,some even deal true,not only that,things like locket and randuins will give you solid resistances vs fizz,and will fit well against most comps.
most counterplay lies in abilities,and bruiser fizz is just much more vulnerable to cc,peel and doesn't just instagib his target in 0.5 seconds.