Electrification and quai height are appearing as a double standard.

Your comment on gauge makes it sound like kinematic and dynamic aren't synonyms. I had to check. :)

In your other comment where you mention German vs French polishing, I assume that German polishing is much more infrequent since:

1. DB runs HSTs at higher axle loads and lower speeds.
   
2. DB runs freight extensively.
   
3. Siemens decided not to use Jacobs bogies for the ICE3 so they "could be removed more easily" which is preposterous unless they have much higher wear rates

Unless they simply couldn't build an EMU with Jacobs bogies at the time.