I think we are just playing with semantic here.
Both SAS Fast Track and CPH express are “fast tracks”. However both are brands or given specific names. Also we can question the fact that one is more effective than another.

Mainly using CPH express as it’s included with Sky Priority then with any tickets or cards giving you access to that benefit.

Using CPH express can be very efficient during holidays Period when everyone is travelling in DK. I safe a lot of time using it. You can easily wait 30 minutes queuing without it. Also terminal 2 or terminal 3 security entrance are basically the same. I will tend to us terminal 3, usually less crowded