the coinnector has nothing to do with the speed. the USB C connector is simply a different physical interface. The added spped and power are not a function of the connector but rather of the newer USB standards.
USB 2.0 had a max data transfer of 480 Mbps. USB 3.0 upped that to 5 Gbps and the latest USB spec , 3.1 tops out at 10Gbps and can provide more power than previous USB versions.
But USB 3.1 n be used with both the new C type connector as well as the older A type connectors. SO it is the new USB standard, not the connector that is providing users the the higher speeds and power. (and most of us as audiophiles would not be interested in using the noisy power that comes from a computer, most of us opting to power our audio gear with quieter linear power supplies. So to us the higher power capacity of the 3.1 spec is not really something we would be interested in anyway.)