Masters are even more subjective than mixes- if that's possible. Its wierd how that works- you'd think that your options are limited because the tracks are mixed already, but mastering engineers can drastically change the way a tracks sounds.
I find that its more technical in some ways than mixing, yet WAY more subjective. Mastering largely depends on the judgement of the ME as s/he balances one thing against the other, one technique against another. Sure, there is knowledge of the process and tools but when you're judging a master you are directly criticising the ME's choices more than their technique.
Its a bit more personal that way. I can see why being competitive about it is a bit off. Eg.
"I think Master A sounds
creamier than Masters B & C."
"I agree, but its also lost all of its
impact and
soul. B has much more
weight while C seems like it has a dusting of
sparkle on it."
"You think so? I thought C sounded
tinny in the
sparkle category. B is much more defined in its
sheen compared to the orginal."
"OH, now
sheen is different, yeah. Of course B has the most
sheen but I'm saying that its not as
creamy as A. I'll take
cream over
sheen any day."
"Of course. But that doesn't take into account the beautiful
delicateness of the quiet passages in B!"
How do you objectify stuff like this?

You can't really quantify it, so its odd to think of it in terms of a competition where we're more conditioned to expect clear results.
It IS a fun idea. though. I'm insterested in seeing how this goes.
Take care,
Chris