I have both the Archer A20 and the 5400x. When looking at the dbm signal on the A20, the signals are up to -20 dbm lower than the 5400x on all devices. I put them in the exact same location for testing (not both running at the same time for interference). Example, the farthest device shows signal strength at -60 dbm for the A20 and -81 dbm for the 5400x. Is there a reason for this or does it really not matter? I have the option to return either one at this point. Trying to make a decision.