"R. Stanton" wrote
Better than ABX?
ABX has become the standard test for comparison
of audio components.LOL!!!!!
What is the standard for comparison tests?
In home auditioning has always been the "standard"
audiophile response. Beyond that one has to consider
the equipment (source, amplifier, speaker) under
evaluation before determining methodology.
But your question does not consider the human
emotional response ("comparison tests") which is
the ultimate arbitrator... or at least the one most
closely associated with your wallet.