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Apple first party devices have proprietary H1/H2 chips that supplement the Bluetooth stack and enable easier pairing, audio sharing, spatial positioning, etc.

https://www.soundguys.com/how-does-apple-h1-chip-work-21049/

That only works if you use two Apple devices together. You don't get those functions with other Bluetooth on a Mac, or using Airpods with an Android. It doesn't really make that big of a difference IMO but it's there.