How does this razor work?

As I look at the razor in my right hand and use it to shave the right side of my face I see that the comb is less open at my nose and more open at my check.

This make sense.

I would have guessed that if I flip the razor 180 degrees I would find again that the closed comb would be at my nose and the open comb would be at my check.

This is not the case. As I turn the blade 180 I find the open comb at my nose and the closed comb at my check.

Why is this optimal? It seems to me to be incorrect and less than optimal. I would imagine that a slant bar should start narrow at the center of the face and increase angle toward the check.

What am I missing?

Thank you,
--Shoki