Sorry for the late response, haven't had much time this weekend.
For Shazam:
Shazam's Teleport not allows him to complete avoid the setup after Trait Lift.
GL and Shazam actually go even in footsies, with Shazam's B23 (the shoulder string that makes him airborne) going over B1 as well as catching jump back air Oa's Rocket
Shazam does slightly more damage for a 1 bar Bnb, and has better setups of a knockdown
GL's horrible backdash combined with Shazam's good foward dash doesn't build enough space to zone for long
While a little tricky, both air and ground Oa's rocket can be forward teleported
This is not to say that the Shazam player and the GL player put in an equal amount of effort in the matchup. Obviously, the GL is running away, zoning, and shutting down jumping with Lift. But a Shazam player that bulldogs his opponent and never lets them breathe (@
Digit ) can keep up with any GL player.