bruisers have their main powerspike midgame and are xp/level dependent and a bit less item dependent than adc. sharing a duo lane sets them back.
same reason why you dont play mages with a support on bot lane.
also, if you dont have an adc somewhere else, like quinn on top or kindred, youre gonna have a hell of a time pushing turrets by midgame or taking objectives like baron or drake. meaning the game drags out until lategame, where fighters fall off and adc get dominate.
[{quoted}](name=Archon X,realm=NA,application-id=3ErqAdtq,discussion-id=VKr0f2KA,comment-id=0000,timestamp=2015-10-28T07:44:23.820+0000)
lol what
the enemy adc will have range, and a support to prevent you from face-tanking
this is also true. a double bruiser bot lane is hit or miss. either youre completely snowballing and stomping the lane, or you get poked and kited the shit out of you and lose hard.
melees cant even cs under their turret against an adc. another adc can due to the extra distance they have from their opponent.