Why does one blade sharpening thread get lots of posts...while a nother gets no response at all...
One blade will always be sharper than the other...just feels that way. Sometimes even one blade will bite more on the ice than the other...sometimes it's just how it sits on the auger and a little tweaking of the screws can be a lot of difference.
In the case for hand augers...it's because your arm can torque more at a certain pull and at a certain push.