Tim,
ARC is NOT meant to be used in a printed mix. It is used to "correct" the deficiencies of your room *while* you are listening to a mix
in your room.
If you are gettig bottom heavy mixes outside of your room (in the car, home stereo, on phones) after verifying your mix with ARC on, then I'd say ARC is failing you somehow. And if that is true, I'd say you may need to take your measurements again or address the issues in your room. JMO.
Again, imagine your room has a slight null @ 63Hz and ARC corrects that by boosting 63Hz (which is now noticable in your sweet spot) and you now hear a balanced 63Hz in your room. It would be odd to think that everywhere you take your mix the same 63Hz null, as in your room, will be present and your mix needs that "correction" there too. Do you see what I'm saying?
BTW, I *NEVER* listen to mix
with headphones on my DAW with ARC turned on. ARC is only turned on when I am making critical mixing decisions thru my Mackie HR824s.