Yamato vs NJ?
Iowa is 6 knots faster and has Star Wars quality electronics compared to Yamato.
It's much more likely to land it's shots than Yamato.
When Yamato shot up the 'Gambier Bay' at Samar, Gambier Bay's machinery had been badly damaged and it could hardly move yet Yamato had to close to point blank range.
Yamato vs N.J.
http://9gag.com/gag/aeGzrZB/26-inch-thick-armor-from-japanese-yamato-class-battleship-pierced-by-a-us-navy-16-inch-gun