The counterfactual does not require each Tiger Cub to defeat a German battlecruiser alone. Dogger Bank's ranges fell inside the useful reach of the Mark XII 9.2-inch gun, and several cruisers could add a high volume of fire to the British battlecruisers' heavier salvos. Thick belt armour could not cover every control position, deck fitting, or part of the superstructure. Even high-explosive hits in those areas could start fires, disrupt fighting efficiency, and make escape harder for an already slower German force.
Notable Point · 1:17:03-1:20:47
9.2-inch fire could cripple what belt armour did not cover
At Dogger Bank ranges, rapid 9.2-inch fire could damage battlecruiser control positions, decks, and superstructures even without penetrating the thickest armour belt.