Are they comparing 3.6 Flash to 5.6 Luna and losing? That's ruff.
Why wouldn't they? Luna isn't a Flash model. OpenAI hasn't released a flash-equivalent model since gpt-oss-120b.
Did you ask me a question and then answered it yourself in the very next sentence?
Anyway, given that both Gemini and OpenAI have 3 sizes of models, one would think Google compares their medium size to OpenAIs.