Im rather baffled that everyone thinks the Caldari military would automatically be more efficient.
8 separate megacorps, all with their own paramilitaries, all of them nominally separate, competitive and distrustful of the others, with recognizable factions between them?
That would be a bureaucratic nightmare. Redundant organizations, political and budgetary jockeying, organizational turf wars, megacorps unwilling to share high-end tech with their factional enemies, just off the top of my head.
And Im not sure its a given that the best officer would find his way through the ranks of the Cal Navy. Im sure KK would object if the best new officers happened to be made up of a majority of say Ishukone junior officers. Such things would no doubt matter in the promotion process.