>Apple, which routinely leaks units sold to business media

This doesn't happen because for every other major product they disclose their sales every quarter.

There are no analysts numbers that support what you said.

And the "low end" model is above what others call the "high end" model.

The Apple Watch is, in all analysts reports, the #1 smart watch in sales numbers, by a wide margin.

Yes, Fitbit and Xiaomi may sell more, but those are $150 and $14 fitness bands, a stopgap solution.