EQ and Effects

With high end gear (pioneer rmx 1000 etc.) the effects emphasize the eq frequencies like an onboard mixer. The idea is neat and I'm planning on doing this in traktor with the controller manager. One method I came up with could be using duplicate decks and fx units ( not ideal but a possibility.)

When I play the duplicate decks turn the high/mid high to -100% and leave the low/midlow at 0% on one deck and vice versa for the other, I would assume it would equal one deck playing, but is noticeably lower when using the Xone mixer. Even with four decks it sounds lower to me. I tried it on classic with 3 decks and I seems the output of three decks with one eq value at 0% and the other two at -100% is equal to one deck with all eq values at 0%.

I wonder the reason to this all decks are have the same settings. Anyone have any ideas?
Also assuming I would need to boost the gain by about 7 db to get the same level with the xone mixer... what do you guys believe the best setting for using three decks would be?