What is the science behind bot lane skill discrepency

I don't get it. its always one adc is 1/12 and the other is 15/3. its every single game. you can have top lane win go even or lose. but most of the time. its close. same thing with mid lane. and jungle. but this god forsaken cursed lane. what is wrong with people that adc and support. do they go on full tilt after the game starts or something i dont fucking understand. i never see a bot lane come back after giving a kill or getting behind on cs. its like you can see how the rest of the match go just by looking at the first few trades. one side wins trades. they win game. its really frustrating. every lane wins and we lose because adc is the most important role in the game

am trying to figure out what it is. but I can't understand the reason why this lane is so one sided.

if my adc is doing bad there is nothing i seem to be able to do to make them do better. i can help my top laner push lane or put pressure. or gank mid lane they often start going off with items after a kill. but bot lane is hard to gank for a jungler especially with damage supports like brand or zyra. and there is very little gank assist in that lane

do all smurfs play adc and faceroll plebs. god knows. i wish to figure out the reason for the bot lane snowball. but i cant figure it out

i bet am not the only one that sees this in every single game bot lane is never even. bot lane is never close. its either you win that lane hard or you lose it hard.