While all 3 come with slightly different thermal design approaches
and various options like 8GB vs 16GB of RAM
and in the case of the MacBook Air options for 7 vs 8 GPU cores first real-world tests indicate that all variants of the Apple Silicon Macs
are in the same ballpark when it comes to gaming.
That said, make sure to check the sheet for performance reports
about the games and specs you care about.