Hello tsdivine!
Not sure those reviews you offer are valid comparison. Put that 50/1.4 Canon lens on a 2013 Sony A7 sensor for a more equal comparison (Not a trashy sensor by Canon circa 2000!) Moreover, most of the differences that come up in optical bench tests are virtually not discernable to a naked eye viewing images on a compuer screen.
I am sure there are some folks here who own both these lenses and will be happy to offer us side by side results using both the lenses on the same subject shot under identical conditions.
Also, a lot of today's Zeiss is not German glass made in Germany. Zeiss sub contracts and licences stuff all over these days, incl to the Far East. That's like buying a Merc made in China.... May as well buy a Cosina!
On most forums, I percieve people seem to spend endless hours comparing lens quality without half as much thought to their photographic skills and talent. For example, the difference in DOF of a 50mm 1.4 and 1.8 or even f2 for that matter used wide open for purposes of street and general photography is almost neglibgible at 5 to 10m shooting distances. As for picture quality, it is almost the same. The minimal difference in light gathering is amply made up by today's high ISO range cameras. Only bokeh may differ, not sure how much...
That said, your personal choice/preference is what it is, I have no issues! If you are happy with a particular lens and its results, matters not what others think! But such comparison as you suggest cannot be considered justification.
Happy shooting!
The Canon 50 f/1.4 is a weak lens at the widest apertures. I have no doubt the Sony FE Zeiss 55mm f/1.8 will destroy it @ f/1.8 in a fair comparison.
Zeiss lenses are designed in Germany and manufactured in Japan. Nothing wrong with that. 

and no medication for it 



