Its really not fair to say which ship is better if they are of
the similar class because the quality of the officers and crew
make alot of difference on the performance of the ships
the reason why i say the Iowa would cream the Yamato is
becoz............
1) Iowa's superior radar allows it to fire accurately at the
Yamato from beyond the horizon, the Japs can't
2) the slower Yamato can't close in on the Iowa, the Japs can't
shoot what they can't see and the Japs are famous for their
shooting INaccuracy
3) Yamato's armour may be the thickest but it's brittle
4) the Yamato's 18'' shells have fuses that are set too long,
they'll pass through a ship's hull without exploding within the
ship
so actually, even the older US battleships like the South Dakota
or Washington would have defeated the Yamato..............mostly
due to their superior radar. the Yamato is incredibly hard to sink
but she's quite useless in battle when the enemy ship is not
fighting it at close range..............