> We found converging evidence that AI's advantage stemmed from rapidly deploying larger quantities of information

This jibes with previous results in LLMs effectiveness at combatting disinformation: https://mitsloan.mit.edu/ideas-made-to-matter/mit-study-ai-c...

>in a series of four preregistered experiments

Love seeing preregistered research!

I disagree with the conclusion. AI systems out-persuaded expert humans in 2026. Should AI systems be prevalent in political debates, each of us will become experts at dealing with this, and it's not clear AI systems will out-persuade humans in the long run.