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@Dutch_Cheese
No, angle is the same.
Dimension of the square at the end is also the same.
But the spot where and how it is measured is different.
One is measured before the radius, the other one behind the radius.
That explains why one is a bit thinner than the other, although the taper is the same.
One crank will slide a bit too far over the axle (probably cannot be tightened well)
Other crank doesn't go far enough on the square. Can fit, can tighten, chain line a bit too far out, need to check torque frequently.
Sheldon explained it well.