My reasons for not getting involved in these comparisons are a little less inflamatory than Alan's reasons, but valid, at least, to me:
A mic doesn't know or care what it's recording.
Some mics do a better job than others on some things, sometimes.
Every mic will impart its own coloration to the sound.
Slight position changes can have a big impact on the sound.
What sounds good by itself may not sound best in the mix.
The mic that works "best" may not work "best" in another song.
Sometimes, any mic you choose will work just fine.
Unless a mic has an objectionable peak or weird response curve (which might not make it very useful for me to keep around), I find myself mentally filing a particular mic sound away, to try later, when I might want that unique sound. These shootouts are interesting to me primarily to hear how people react to them.
Hearing someone say, "Wow, I love #3" only means that they're hearing a combination that they would find useful, IF they had the exact same source, recorded under the exact same conditions. What they're really hearing is how well that microphone complimented that particular source under those recording conditions.
If that's the sound I'm looking for, my first instinct would be to have the person who recorded the sample do the track. Failing that, I would try to match the signal chain and recording conditions as close as possible with my own gear. If that didn't work, I would start dragging out mics and sources that I think might be able to approximate the sound I wanted.
To me, it's not about which mic is "best" - it's about what combination of mic (and source) will fit a particular mix "best". When I record, I try to leave my "preconceptions" at the door, as to what will work and what won't work, especially when it comes to guitars and vocals.
I'll throw up what I think will work, then switch from there. Sometimes I get it right on the first choice, other times, I'm "less" right. It might be a $2,500 mic that works "best", or it might be a cheapie that someone gave me for free. Ireally don't care what I wind up using - as long as I get the sound I want.
My $0.02