Math Issues with base states and issues of dis-signs

Since the rework done to twtich is states in terms of pick ratio is a an average of 1.9459 ~ 1.95 percentage of being picked. with a win ratio of ~ 42.3%. These numbers come from lolking.net. As an adc that doesn't seem right. Im talking about the pick rate and not win rate. For example Lucain has a pick rate of 10-13, sivir10, Kalista~7-9, Graves ~50, Ezreal ~20, Vayne ~20. These are just some of the adc in lol. The one of the reason he isn't pick much is from my opinion is that his skills dont have many ratios and the math on them is off along with the information people have accesses too is off or not right. On the lol website it shows that his E has "Deals 20/35/50/65/80 physical damage plus 15/20/25/30/35 (+20% Ability Power) (+0) per stack" This shows the AD ratio on his E is zero which is odd since the Lol wiki page shows his E being a ratio of 15 / 20 / 25 / 30 / 35 (+ 20% AP) (+ 25% bonus AD). So what the deal.To go into more information I had in a game 141 bonus ad and on E I was geting 37 bonus ad now granted I had 1 dragons so the difference is understandable. His Q states that once out of stealth Twitch gains ATTACK SPEED: 30 / 40 / 50 / 60 / 70% for a short duration. From what I can tell in game I had attack speed with out the buff was at one point 2.05 and with the bonus was 2.46 which is a difference of 39 which could be seen as 40 percent but since I had lvl 3 q the bonus should hav max at 2.50 atttack speed. Must of my problem stimes from the fact that he is not seen as much as others and he is weak by compared to a champion of similar him which is Kailista who her build is to build like other ADC but people rush a Runas all the time and her E passive is op too as well to get back mana and CDR as well what the...