The chargers they showed at their first Mercedes location in Atlanta are 400kw split between 2 units. So 200kw each for 2 cars that can handle it, and balanced between the 2. Eg if one car only needs 100kw, the other can pull up to 300kw
I’ve seen video of the Cybertruck getting more than 330kw, and the Lotus cars seem to charge at high rates too. But 200kw each is a fine charge whilst getting a coffee
The question is how reliable they can be - if a charger is broken, it doesn’t matter what the numbers on the label say