Unless I'm misunderstanding something, it's actually a bit faster MT than the Ryzen 9 4900HS, their higher-watt laptop part. The 4800U is a good bit slower than that. Zen 3 mobile will presumably change that equation whenever they come, though of course the M1 single core appears to be slightly faster than the Zen 3 desktop parts already.The MT scores are similar to Ryzen 7 4800U.
Geekbench being such a short bench, the most interesting questions for me going forward are how much throttling there is on the MBA v MBP v Mini. Certainly the Air isn't going to sustain those numbers, but will be crazy fast for general usage. If the others can sustain that level of performance though, it will be truly something.