for ..I mighht be missing something here....but you said you sharpen knives the same whay swords re polished?I use many of the same tools that a Japanese sword polisher might. In fact, most of the "advanced adult education" I have acquired comes from the art of old world sword sharpening. (My favorite book is pictured below.)
And like formal polishers, I actually do polish, clean, stop the invasion of rust and verdigris and render the edge to four-star uptown girl keenness
Looking at the pic of the razel...all I'm seeing is a mirror polished edge, which I see on every knife I see in the hands chefs who use japanese kitchen knives.
You can not equate sword polishing with what's on that razel..thats a polished edge-even if you did use natural japanese waterstones, it's still just a sharpened edge thats been polished. barbers who use straight razors strop their edge to polish it also.
for reference, here's a link to an sword polishing site: