Germany's fleet did not need to guarantee victory over the larger British navy. The theory assumed that a British victory would leave the Royal Navy badly damaged. Other powers could exploit Britain's weakened position. That expected vulnerability was supposed to deter Britain from fighting the German fleet.
Notable Point · 1:25:42-1:26:09
How risk-fleet theory was supposed to deter Britain
A costly British victory was supposed to leave Britain vulnerable enough to deter an attack on Germany.