Sure she's sharp. I mean good looking, as well as plenty sharp picture-wise. And if I was to run the picture through Photoshop, you think it was made by a Leica.
And come on now. You really can't compare a 50mm lens to a 40mm lens, two totally different optical formulas being used.
Remember that the Canonet is a mass-market, point-n-shoot camera from the 1970's. Considering that, it's image quality borders on spectacular. Plus it's small enough to fit in my pocket, so I carry it with me. Can't say that about my Nikon F, or your Pentax A.