Why cruiser groups matter more than one-on-one statistics

Were the British C-, D-, and E-class cruisers inadequate against the Pensacola class?

Individually they were disadvantaged, but a British cruiser group retained a credible chance through numbers, maneuver, gunfire, and torpedoes.

Pensacola's stronger 8-inch battery did not settle the operational comparison by itself. British C-, D-, and E-class cruisers would be disadvantaged alone but were expected to operate in groups. At closer ranges their higher rate of fire, maneuver, and torpedoes could exploit Pensacola's limited armor. The Battle of the River Plate supplies the broader analogy: several individually weaker cruisers can divide an opponent's attention and create tactical opportunities. The useful comparison is formation against formation rather than an isolated paper duel.