Basically agree. Some errors, like neither the 9.3x62, nor the 9.3x64 used the 8mm Mauser nor the 30/06 as a parent case.
9.3x62 CAN be made from '06 cases, although there is .006" to .007" difference in nominal base diameter. The 9.3x64, however cannot be made on '06 brass,
due to it's .507" base diameter. This one might be made from .300 mag. brass with the belt turned off, though, with similar error in base diameter to the '06/9.3x62 differences.

This could easily be countered by turning the belt to .507" from .532". The case would then form perfectly.
I did this with the 89x68brass needed for my 9.5x68 wildcat. I turned .375H&H case belts to .522", necked for proper shoulder location and trimmed to 2.660"
and fireformed.
These had some 3gr. MORE powder capacity than the 8x68S RWS cases. they worked a treat in the 9.5x68.

Good article, though. Cannot disagree with his premise that some 9.3's should be added to the Dangerous game list in countries that discriminate against it.

The late Finn Agaard once noted from his experiences, the 9.3x62 duplicated the .375H&H's performance on African Game in his opinion.
We know today, that with today's powders and stronger actions, the 9.3x62 can duplicate & exceed slighlty, the 1912 .375H&H ballistics of 2,400fps with 300's and 2,600fps with 270's.
My 22" bl. factory Oberdorf Mauser exceeded those ballistics.