Ten 15-inch guns may outthrow nine 16-inch guns

Would ten 15-inch guns make King George V better or worse armed than a battleship with nine 16-inch guns?

Potentially better in weight and rate of fire, with output close enough to an Iowa comparison to require detailed calculation.

The ten-gun arrangement is judged better armed in practical weight of fire. Ten 15-inch shells can produce a heavier salvo than nine 16-inch shells depending on the ammunition compared. Rate of fire may strengthen the advantage over time. The rough comparison could approach the Iowa class with super-heavy shells, though a precise result would require calculation.