Why is Magic Trackpad 3rd gen on MacBook Pro M1 showing low polling rate of 60Hz?

I use some tools to test the polling rate, and all I got was just 60Hz, while testing on the onboard trackpad was 125Hz.

I tried connecting with the lightning cable, and it fixed just the latency problem, still got the very low polling rate.

Later on, I tried connecting to my friend's MBP14, which has a high refresh rate screen. The result is 125Hz. I don't know what's happening here...

Both computers are at the latest Mac os 15.4.1, and the trackpad firmware version is 3.1.1

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