Topic: babyface channel 3/4 louder then 1/2

hello i asked the same question a while ago, but i had no answer so i try again...
is the gain of channel 3/4 louder then 1/2 because of the balanced unbalanced difference?
i tried on a dj mixer and it seemed to me so...
how much exactly is the gain difference ...? if i add 6db on the totalmix they would sound the same on the mixer? or this will make channel 3/4 sound distorted, would it be better to subtract 6db on channel 1/2

i am just trying to dj with the babyface and this feauture makes it indeed more complicate...