Let the test decide who makes the creative
What I usually see: creative format gets chosen by assumption: creators for authenticity, brand films for polish, AI for scale. Those assumptions often replace the head-to-head test.
What I'd change: test creator, brand and AI-generated creative under matched media conditions, then assign each format to the outcome it proves it can drive. In an equal-spend Meta test, creator content won on view rate, click-through rate, cost per interaction and shares, while brand creative led on CPM and follows. In a separate tune-in test, creator-boosted ads outperformed both brand and AI creative.
Creators earn the stop and the share; the brand earns the follow.