Why cruisers made better wartime flagships

How capable were Minotaur-class cruisers as command ships compared with carriers?

They were much better suited because wartime British carriers had little dedicated staff space; truly ample carrier command facilities came much later.

Wartime carriers were optimized for aviation and often lacked space for a fleet staff, forcing commanders into awkward moves between ships. Philip Vian found Formidable especially ill-suited to his staff after shifting flag from another carrier. Unicorn happened to contain spare bridge-area space that could support command work even though its original purpose was unclear. The Queen Elizabeth class became the first British carriers designed unambiguously to command a task force, while Albion and Bulwark offered still larger dedicated facilities. Against that background, a Minotaur-class cruiser was a much more practical wartime flagship than most contemporary British carriers.