Why speed changes the battlecruiser ranking

Why does Derfflinger rank below Hindenburg, Renown, and Repulse?

Hindenburg is preferred as a later, modified ship, while Renown and Repulse combine 15-inch guns with the speed expected of battlecruisers.

Hindenburg receives credit for being the third and modified ship of its class. Renown and Repulse are preferred despite their six-inch belt armour because they have 15-inch guns and can outrun most opponents. A battlecruiser that relies on speed needs a meaningful speed advantage over ships in other navies. This personal ranking gives speed considerable weight alongside armament and protection.