Hand Tools Archive
Machine surfacing of wood involves rotating cuts that (effectively) eject a "chip" that has near zero thickness at the beginning and tapers to near zero thickness at the end.
This is more similar to machining metal than making longer shavings.
This has meaningful impact on where heat is generated and dissipated (hence the setting of feed rate and cut depth).
To get an "apples to apples" comparison on blade life, hand planing and "wood surfacing" such as with the Marunaka Super Meca which lifts near continuous shavings.
If the ideal steel for the Marunaka is the same as the surveyed hand plane blades, then more broad conclusions might be reached.