Limits of the N3-Yamato and G3-Iowa analogy

Is describing the N3 and G3 designs as Yamato and Iowa twenty years early a postwar idea, and who started it?

It is treated as postwar shorthand, though no originator is identified. Differences in speed and classification make it inexact.

Describing N3 and G3 as Yamato and Iowa twenty years early is postwar shorthand whose originator is not identified here. N3's cited speed is 25 knots against Yamato's 26.5 knots, while Clarke distinguishes G3's battlecruiser design from Iowa's fast-battleship arrangement. He uses Vanguard to explain why external armour alone does not settle the classification: internal subdivision also matters in his interpretation. Drachinifel's G3 video is identified as a modern example of the Iowa comparison, establishing a disagreement about how closely those specifications should be equated. The shorthand conveys scale and ambition while leaving those design distinctions unresolved.