Of course, I don't know everything that our friend has researched. Going by what he told us, here are a few basic questions that pop in my head:
-is this based solely on sprints?
Even Beyer has noted a strange discrepency between measuring sprints and routes in his figures (i.e., sprinters will often end up w/bigger average BSFs than routers - hence a downward adjustment is made).
-were only fast tracks considered? Off-tracks probably should not be included. Beyer doesn't when setting up par times and figures. Reason being, 1 figures that a) fast is the normal condition and b) 1 of the prime reasons a given race mite be so much slower than average IS for rainy times; a prime reason for even using variants and prime example of adjusting for conditions.
Frankly, I have looked into doing Beyer-type par figs for MOW, etc. I was practicing w/1921 (charts I have), using John P. Grier as a benchmark (and even Exterminator, etc). I have had a very hard time coming up w/something reasonable so far. Most of my "refined" work has generated 130+ for JPG in his record mile - I think outrageous. So my initial cut getting 122 actually seems reasonable! But I can't get it to work logically. I've given up for now.
Based on what I've read here, and what I've done myself, even I can't believe MOW constantly pulled 135+. Occasionally, sure, maybe - but *average* in top 130s? So I'm still suspicious of the amount of data (not enough races, perhaps).