Hi Vecchiouomo,
You may be right, but seem to be offering a generalized comparison between your “antique” K Sabatier knife batterie and your impression of Wusthof–not direct hands on experience.
I’m speculating that the biggest structural difference is that my Wusthof has a substantial tapering from butt to tip and the K Sabatiers are not tapered. Are your antique Sabs tapered?