Yamato's armor quality is not bad at all. What Americans used to test after the war was the steel plate left by Xinbao. The mass ratio is n grades higher and lower. Of course, that would be worse. In fact, Americans later admitted that the armor quality of Yamato was not worse than that of Iowa.

Compared with the 406, the 460mm cannon is not as simple as tens of millimeters, and its weight and range are much larger. In the Battle of Gathering Water, spruance had six battleships to fight against Yamato, but in the end, air strikes were adopted. It can be seen that even Americans still have a fear of Yamato.

In addition, Yamato's crew had undergone devil training before the war, and they had an advantage over Iowa in quality.

Of course, Iowa also has its own advantages. Its speed is fast, which can make it rush into its range as soon as possible, so that it will not be hit by Yamato, and it is difficult for Yamato hit the high-speed Iowa. Another point is that the radar and fire control mentioned upstairs are absolutely dominant.

Generally speaking, if it is in the daytime with good weather and sea conditions, Yamato has the upper hand. If it is at night or when the weather is bad, Iowa will use fire control and radar to eat Yamato.