What if Tribal-class destroyers had dual-purpose 5.5-inch guns?

How would Tribal-class destroyers have performed with a good dual-purpose 5.5-inch gun?

If the mount had adequate elevation and handling, their eight guns would have made them exceptionally dangerous to enemy cruisers.

The result depends on the mount achieving useful anti-aircraft elevation as well as surface fire. With eight effective 5.5-inch dual-purpose guns, Tribal-class destroyers would likely have shredded more enemy cruisers during the Second World War. Mount performance, rather than calibre alone, determines whether a weapon is genuinely dual-purpose.