Nissan had, at some point, sold more Leafs than Tesla ahad sold Model S's, because Tesla didn't really start selling cars in large numbers till 2013 so Nissan had a bit of a head start. I don't think GM have sold that many pure electrics although the Bolt is out-producing the Model 3 right at this moment.

But if you factor in Tesla's plans for the next 24 months or so, which they seem capable of pulling off, then no-one else is going to be able to catch up with them for five years or so.

When I say "mass market" I'm talking about cars that start less than $50,000 (and then it's still sarcastic).

If Tesla are moving faster than everyone else backwards looking metrics should pick up on it soon enough.

Well OK, yes, I kindof missed your "mass market" specifier. Tesla have only shipped a few thousand Model 3's so far. But they have 400,000 reservations that they intend to fulfil in the next 24 months or so. And that's a big challenge to everyone else.