Clean technica agrees that VW ships more. VW has more brands and models. Tesla model 3 may be the top seller, but it's one of only 2 models that Tesla has with significant volume. For instance Audi is a VW group company too. Together they have ~5 of the top 20 EVs.

[1] https://cleantechnica.com/2021/12/30/15-of-auto-sales-in-eur...

Volkswagen had 25.9% of the European EV market in 2021:

https://eu-evs.com/bestSellers/ALL/Groups/Year/2021

Volkswagen owns many automative brands (VW, Audi, Skoda, SEAT, Porsche, etc.) so sales are split across more brands and models:

https://www.volkswagenag.com/en/group.html