The location of CX lounge is far better; CDG may look good on the outside but is very dysfunctional - to get to the AA AC you have to carry, and I mean CARRY, your carry-ons up a staircase, walk through a sometimes crowded cafeteria, and down on other side, where there eventually is an elevator working (didn't work tuesday last week) , then head out to satellite and down escalator to lounge. Back to gate the same way.
On a warm summer day, the CX lounge location is a disadvantage, as they have no AC, so it tends to be a hot visit - good excuse for refilling your glass with ice cold beverages, selection better than AA.