XP needed to reach level 2 (only level 2) while in duo lane (not 3 or 4 or 5) will not be shared by the 2 players
i think at level 2 
have all an increased chance to fight a lvl 2 adc+sup in 2v2
they will reachit faster to avoid getting poked to death by the enemy adc in the meantime
¿?
Rustling Bush3 votessounds familiar... 
.... im pretty sure he has (or use to have) unshared exp passive. not really enthusiastic about seeing fighters forced bot.
Best princess EU2 votesplease stop making me say what i didn't say
Morde was the only one who had this, the other adc was level 1 here it would be a level 2 fight between the 2 carries and the 2 supports
additionally, morde went 3 levels ahead of you in mid game while you were level 8 as an adc, here it isn't the case since it's only level 2
King Geffy1 votesJax would might not be well since he focuses so much on 1v1ing and Splitpushing