I belive the NMC chemistry is a bit better when it comes to charging speed and durability than NCA. So it shouldn't be difficult for the car to do supercharging as well as the Model 3 or better. Provided they are willing to pay Tesla for access; otherwise they're stuck with CCS.
Actually, while NMC can take c-rates around 2 for charging, they do not usually have the cycle life of NCA. Of course, that's a generalization and each product's specific engineering choices makes a lot of difference.
So yes, at 3x 18kWh = 54 kWh and it can theoretically charge at 108 kW (2 c-rate). We'll see if who is willing to shell out the big bucks for 100 kW CCS.