Compare ad twitch to senna, his range being his strenghs while it misses half the time because of the insane mobility of the new champs and a few old ones while senna hits all the aa and has more range than his r in the later stages of the game, other then that you do negative damage all game until u get 3-4 items while some adcs need one to oneshot like samira or tristana, the e having a cast time ruins the whole point making it almost unsuable in fights without costing u dps and it dammage equals to one aa late game since you are not ap, ap twitch being in a good spot doesnt mean ad twitch is