Were light carriers worthwhile outside the US Navy?
Short answerYes, but the US could assign them selectively, while Japan often had to use CVLs where it would have preferred fleet carriers.
NotesThe contrast illustrates a central force-planning rule: wars are fought with the ships actually available. A numerous fleet can match ship types to missions; a constrained fleet must substitute whatever survives. American numbers allowed light carriers to reinforce missions suited to their smaller air groups. Japan's shortage of fleet carriers meant its CVLs often filled roles for which larger decks would have been preferred.