Crew culture behind Renown and Repulse

How much of Renown's success came from modernization, and how much from her captain and crew?

Both mattered, with substantial weight given to the battlecruiser culture and unusually aggressive crews of Renown and Repulse.

The success of Renown and Repulse cannot be reduced to their refits. Both ships attracted crews who wanted to serve in battlecruisers and developed a reputation for unusually bold conduct. They also escaped some of the ceremonial and symbolic pressure attached to Hood. Modernization and favorable matchups mattered, but the answer insists that a ship's people and institutional identity can shape how its material advantages are used.