"Sure, there might be people that fool themselves into thinking that there
is
some ineffable difference between a Yamaha and a Halcro - and given the
way
this test is set up - it is skewed to prefer the Yamaha since the
amplifiers
aren't going to be driven into compression where any differences might be
seen."

No one cares about driving amps into the limits of their ability to
provide current. Any two amps can be done so and is a empty exercise to
do the obvious. The test is about driving speakers as is done in typical
high end systems. Those who advocte "night and day" differences in sound
don't even bdgin to drive their amps to be able to make their claims.
They will make their claims with easy to drive speakers using amps whose
current limits are rarely reached. The way you state your objection is a
red herring for the test and the reasons it was created. The one rule
that contains all your objections is the one that says amps are not to be
driven above current limits, including the red hot latest thing the hi fi
rags are all goo goo about and the latest example of "night and day" sound
difference; which takes account of your "skewed" crack. That someone can
mention that a load can potentially be found to exceed current limits is
trivial and irrelevent.