Curious about your comparisons to the manufacturer's specs: is it not likely that new blades out of the box, as compared to ones that have been used and/or sharpened, will be closer to manufacturers specs?
To avert mis-understanding, I did not compare any skates to manufacturer's specs, as none is available to mere mortals.
Specs would include all dimensions for a particular size, the material composition of which they are made, the number of millimeters from the skating surface hardened, the Rockwell or other hardness measure of the blade and of the tempered area, type of chrome used, mounting hole position pattern, size etc......
What I did do with my MKs is to copy a published photo of MK Double Star picture, then using some simple enlargement on a copier made it the same size as my size 11s. All proportions were correct from toe picks to tail profile.
Printed the photo and compared the tracings of my skates to the print. My skates had about 1mm used from from sharpening. That amount is not enough to alter the factory curve significantly. The long part of the radius matched the photo, the short part tighter radius near the toe picks shown on the photo does not exist on mine. It was never profiled. To have that tighter radius would have required additional grinding/profiling at the factory.
Can not blame it on sharpeners, as there is more material on the skates then need be. They can take away metal but not add.
It is possible for sharpeners to alter the profile, hopefully they do it with some template.
On my used EXT just bought, I did remove some material (about 1.4 mm) from the lowest pick, to compensate for the 2.2 mm wear of the skating surface from many sharpenings. This brought the toepick into the same proportion to the skating surface as when it was new. Whoever had them before me, their sharpener never touched the toepick.
As for the blade tempering bit: Hardened (tempered) steel should never clog a grinding stone, my MK's radius of hollow when ground with a hand grinding stone smeared like dough. Very ungood, hence the need for frequent sharpenings.
Wear of blades is to some extent depends on the skater'w weight. A 60 lb skater's blades should last a lot longer then one like me at 173 lb. Don't feel like doing the arithmetic, but would guess that my weight on a 2 to 3 millimeter square area of the skate in contact with the ice translates to several thousand pounds force per square feet. That is at standstill. Coming to a T stop from a nice fast forward speed the force is magnified, a lot.
By the way the same forces are present on ballroom dancers' heels wearing stilettos.