That's fair, at really high resolution, the JXL decoders in browsers do better than JPEG decoders. I'm pretty sure this is a weakness in the JPEG decoder rather than the format, but it's still a meaningful result.
At smaller sizes (more typical on the web), the results are opposite, the JPEG decodes much faster.
At smaller sizes (more typical on the web), the results are opposite, the JPEG decodes much faster.