Let's see..... http://leagueoflegends.wikia.com/wiki/List_of_champions/Attack_damage
Base AD:
The only adc with Dramatically less Base AD than Pyke is
, due to her passive's overwhelming damage amplification. Never seen an MF really lose their presence in a game, and usually gets to almost 1 shot damage potential.
The rest.... start between 6-1 AD lower than Pyke. Hardly enough to make a difference, and most of them actually have TOTAL AD scaling skills. Pyke's are all BONUS AD.
(Not to mention they are ranged champs, he is not)
Now..... let's look at AD GROWTH.
Pyke at 18 is 96.
Which Adcs have less than 96 base AD at 18?
Miss Fortune at 95.9 (OOH BARELY)
Kai Sa @ 87.9 (for the same reasons MF has low Base ..... her passive....)
....... and ...... THAT'S IT. Those 2 adcs. Every single other adc..... scales higher than Pyke in AD. The two who don't.....both have damaging passives that more than make up for it.
If an adc is dumb enough to stand still.... use no skills, have no life steal items, or
, then yes. Pyke can outtrade them, especially on low elo builds (high elo builds build ARMOR/RESIST, so they don't build assassin items). But any adc who actually has a clue..... doesn't stand still..... once they get one crit off on Pyke they are GONE. They run from him and start orbing. Or, they have such overwhelming damage that it's Pyke that tries to run (1000+ crits are common in 3-4 item builds now)
I've run the table with Pyke vs Adcs. But I've also encountered the adcs who know what they are doing. Any adc worth their salt destroys Pyke. Any who don't or stay around on a map too long at low HP...... ofc he beats them. E past a team just to R the dumb adc. Doesn't mean that Pyke solo'd them. It means they were clueless.
It's rare for Pyke to do 1/2 of a true assassin's damage. Try playing him sometime. You might get 1 in 4 games where he runs away like a train..... but 3 of 4 games are spent doing 30-50 CC's that are not used by your team, wasted, and don't give Pyke gold or anything for his effort. And if he tries to solo/duel..... he dies.... repeatedly.....written off as useless.
If you scroll down my Pyke games on just this account.... I have MULTIPLE 20+ kill perfect games. But then I want you to look at the damage I did versus my team. Usually about 60% to champions vs the next highest contributor. But I give them a run for their money vs CS (total) damage.
Pyke lacks on hit proc effects, which most assassins have (Talon's passive, Zed's R chargeup, Akali's Passive, etc) His skills don't hit multiple times, which most assassins do (unless he manages to reset his Ult, which remotely gives him access to 1-2 more ults).
He's what you have if you took away Talon's Bleed and Zed's R Mark, or one of Zed's clones. A core Assassin kit with no actual finisher/fast paced damage mechanism.
Which...... makes his players turn in other directions. Aka..... tank.
P.S. If you can hit Aftershock 1/3 of the time on Pyke, you're insanely lucky, since your Q would proc the Aftershock, and its effect would be gone by the time you finish E..... so that's either an all in dive scenario, which gets you killed (and indeed Aftershock Pykes die more), or it's a wasted Scenario.
I already have over 1.3 million Mastery on Pyke. What do I know?