CCS2 is terrible, I'd hate to be forced to use that giant bulky connector and cable. The EU got it wrong. Design by committee always sucks.
The reason it's bigger is because it supports 3-phase power, which NACS does not. 3-phase power is a big thing in Europe.
But I kind of doubt it will go anywhere when they've been forcing CCS2 on everyone.
I'd also like to point out that that's really only true with cables designed to carry currents that can't be supported by J1772 anyway...