Why should it be?

All he is saying: We currently have products in a similar product category (arm based desktop computers) that are widely used and have known benchmark scores (and general reviews) and it would make sense if I publish a new cpu for the same product category ("Reaching Desktop Performance" implies that) that I'd compare it to the known alternatives.

In the end you can just run Asahi on your macbook, the OS is not that relevant here. A comparison to macbooks running Asahi Linux would be fine.