I would be interested to see all the steel types ranked by total surface area within the polygon.
H1
H2
CPM Magnacut
Sandvik 12C27
Interestingly they are all weak on Edge Retention.
The data this site is using really seems questionable.
CATRA testing by Magnacut's creator[0] suggests D2, 3V, VG10, and 440C should have a lower rating than Magnacut for edge retention, while Elmax, M2, and Cruwear should be the same. 5 probably is a reasonable rating for Magnacut though when Maxamet is 10.
[0] https://i2.wp.com/knifesteelnerds.com/wp-content/uploads/202...