OP

Quoted from ifpapinball:

We (and by we I mean Shepherd) just got the test site back up.
Here's what I'm seeing between that SPF from 2013 and today:
WPPR v5.1
You had a Rating of 1751 then, 1738 now (-13 in those 2 years)
Zach had a Rating of 1984 then, 2178 now (+194)
Bowden had a Rating of 1817 then, 2262 now (+445)
Bowen had a Rating of 1583 then, 1853 now (+270)
WPPR v5.2
You had a Rating of 1700 then, 1644 now (-56)
Zach had a Rating of 1806 then, 1885 now (+79)
Bowden had a Rating of 1681 then, 1834 now (+153)
Bowen had a Rating of 1692 then, 1699 now (+7)
(It's worth mentioning that under v5.2 NOBODY has a 2000 rating - Elwin has the highest at 1984. Where as under v5.1 there are 21 players with +2000 ratings)
While I'm playing around on the test site, I looked up Adam Kiesler who finished 45th at Pinburgh. Under today's rules his Ratings get impacted by a 567-44 record, v5.2 he'll have a 32-32 record.
WPPR v5.1 --> Adam's rating from Pinburgh goes from 1661 to 1882, an increase of 212 points
WPPR v5.2 --> Adam's rating from Pinburgh goes from 1592 to 1605, and increase of 13 points
Fascinating stuff for sure