Putting Bismarck's reputation in context

Why is Bismarck often described as the world's most powerful battleship?

Its dramatic story and the loss of Hood amplified its reputation, but several contemporary battleships had stronger claims to superiority.

Bismarck was not automatically the largest or most powerful battleship afloat. Nelson and Rodney carried nine 16-inch guns, while Yamato, the Iowas, and King George V-class ships offered other strengths. Hood's destruction was a dramatic but unusually fortunate strike rather than proof of an unmatched German design. British prewar decisions also matter because additional carriers or completed capital ships could have produced carrier-battleship hunting groups before the Denmark Strait action. Bismarck's own end came after pursuit by cruisers, night attacks by Tribal-class destroyers, a disabling carrier strike, and engagement by Rodney and King George V. The armour scheme was valid in principle, but it put too much protection in less important areas and too little where modern threats demanded concentration. The ship's reputation should be read through the whole operational story rather than a single spectacular hit.