Thanks to Kev for running this one.
Looking at the final results, I had an inkling that Master of Puppets might be the most unanimously loved countdown winner so far, so I calculated so called "victory score" - and Master Puppets really is n. 1, even ahead of Learning to Live, Stairway to Heaven or Hallowed Be Thy Name. (Victory score of 100 means the song would be n. 1 on everyone's list)
The list of the coundown winners so far with their victory scores:
Master of Puppets - 89.8
Learning to Live - 89.1
Stairway to Heaven - 88.1
Hallowed Be Thy Name - 88.0
Arriving Somewhere but Not Here - 84.9
The Eleventh Hour - 84
Subdivisions - 83.3
Eyes of a Stranger - 79.3
Ain’t Talkin’ ‘Bout Love - 73.4
Scenes from an Italian Restaurant - 69.7
I like the stats but I think this metric is biased towards the songs that featured in larger countdowns.
For example, let's say we have 5 participants and a song finishes 1st, 2nd, 5th, 20th and 60th on these five lists. If the countdown was a top 25 (like the Billy Joel one), the song would score 25+24+21+6 = 86 out of 125 maximum, so (86/125)*100 = 68.8 victory score.
If the countdown was instead a top 100 (like the DT one) the song would score 100+99+96+81+41 = 417 out of 500 maximum, so (417/500)*100 = 83.4. This is because scores are relatively closer at the top in a big countdown.
So if this was to be a fair measurement I think that Learning to Live would be significantly lower and Scenes from an Italian Restaurant would be significantly higher. One way to come closer to this could be to score every song as if it was a top 100 (100p for first etc.). This would instead put the small list songs at a slight disadvantage as all placements outside the original list scope would still be 0 but nothing is perfect.
Maybe the most fair would actually be to calculate them all in accordance with the smallest list, so making everything a top 25.
Statistics rant over. I really appreciate all the extra stats and discussions in all of these threads. Makes it really fun to read even when I'm not participating myself!