Apple never claimed the M1 Max was faster than the 3080, they claimed the M1 Max was almost as fast while using 100W less power and while being dramaticly faster on battery.
I wonder what they were comparing. The Geekbench result is for an OpenCL benchmark, if they were using Metal Compute on the M1 that may explain the different results
[0]: https://www.apple.com/newsroom/2021/10/introducing-m1-pro-an...
[1]: https://browser.geekbench.com/v5/compute/compare/3551790?bas...