Rearming Tribal-class destroyers with 5.25-inch guns

Would replacing Tribal-class twin 4.7-inch guns with single 5.25-inch dual-purpose mounts improve the ships?

No overall: the change helps anti-aircraft fire but sacrifices too much rate of fire and surface-combat power.

The larger gun is not a free upgrade. Single mounts reduce the number of barrels and rate of fire, weakening the destroyer's ability to engage other surface combatants even if anti-aircraft performance improves. Dropping from eight 4.7-inch barrels to four 5.25-inch barrels is too severe, although three twin 5.25-inch mounts might be more workable if weight and space allowed. Nominal calibre and dual-purpose labelling cannot substitute for barrel count, firing cycle, and the ship's intended tactical role.