Why gun broadside mattered more than torpedo broadside

Why was so much more weight given to gun broadside than torpedo broadside when a torpedo produces a much larger explosion?

He says guns offered much better hit prospects across likely engagement ranges and could fire many shells for every torpedo launched.

The answer separates the effect of a successful weapon hit from the probability and frequency of delivering that hit. Torpedoes could produce devastating underwater damage, but their useful engagement conditions and likelihood of striking were more constrained. A warship could fire many shells during the period in which it might launch only one torpedo salvo. Designers and officers therefore gave gun broadside greater weight because it represented repeatable combat output across more of the likely battle. Weapons must be evaluated as systems rather than compared only by explosive yield.