If Germany had won WW1 and avoided the Versailles treaty then they would have avoided the Washington Treaty and German battleships would have entered the 1940’s as at least equal to and likely superior to anything the Japanese could put in the water. They’d have also developed superiority in submarines and the battle between the German navy and the Japanese navy would have included Japanese ships getting slaughtered by long range U boats and then getting shelled by super battleships mounting naval versions of the Gustav guns.
It would not have been pretty.
“German battleships would have entered the 1940’s as at least equal to and likely superior to anything the Japanese could put in the water.”
Not sure where you are coming up with all that. I have never heard of the Germans even having something on a drawing board that came close to the Yamato. Japanese Subs were extremely capable and their torpedoes were outstanding. JAPANESE torpedo bombers were far superior to the British ones. The Japanese aircraft would have obliterated the Bismarck much faster. Just like they did to the Prince of Wales and Repulse. The Prince of Wales was a considerably better battleship than the Bizmark and the Japanese did not even need a battleship to help finish it off. They did it all with planes. There is less than zero chance that the Germans could have projected the naval power into the pacific needed to seriously challenge the Japanese. They would not have even made it out of the Indian ocean