>but in my subjective testing with image sizes you would typically see on the web, avif wins every single time.

What is that in terms of bpp? Because according to Google Chrome 80-85% of we deliver images with bpp of 1.0 or above. I don't think most people realise that.

And in most if not all circumstances, jpeg XL performs better than AVIF at bpp 1.0 and above tested by professionals.