There's nothing better about Supercharger connectors.
CCS is now twice the voltage and supports 25% more current; the common max CCS charger power is 350KW, whereas most superchargers are at best 250KW, and often that power is shared among several stalls.
Teslas use CCS2 in Europe where (ahem) they were required to, so by opening up their network, millions of cars there are out there able to use the stations since it's largely a software change.
No mass-produced car uses Supercharger plugs except Teslas, so them opening up their network means only some Fords, produced at some time in the future, will be able to use them - and it's really not a plus, given the slow charging speed, and how oversubscribed many of the stations are. It's going to be fun when people with 100k Teslas can't charge because there's someone with a $35k electric Ford using a charging port...
The entire mass-production auto industry save Tesla has standardized on CCS1/2. The only downside to CCS is that the US and Europe use different CCS connectors, which is a giant facepalm.