It is not so for all bavarian EK docs of course, but if you were to choose the best 20 looking EK docs, probably over half would be Bavarian.
I an wondering if it was because they were catholic.
You see this at bavarian flea markets, intricate and byoootiful certificates for Confirmations, Baptisms, etc. etc.
I think being catholic gave the Bavarians a tradition of relatively expensive multi coloured certificates and probably a larger number of priners geared up to do this kind of work.
Even the smaller uglier documents.... most bavarian units seem to have found a printer to do unit specific documents and avoiding Generic documents that could be used for any unit.
Of course, there are exceptions, but this seems to be a trend...
Best
Chris