It's impossible to really say how strong a character who has yet to appear in a movie will be when he appears in the Shazam film.
If they are doing him correctly then yeah he'd be more or less Superman physically, but instead of heat vision and freeze breath he has magic lightning..and obviously lacks a magic weakness.
The Rock is set to play him so they at least have someone with the right look.
Originally posted by Surtur
When Adam fought post crisis Superman they were physically equal. I know people will say Superman just had mental blocks or whatever, but ehh. Captain Marvel and Black Adam have always essentially been "Superman, but magic".Cap was right there along with Supes lifting half of infinity.
Which would be inaccurate since Superman himself said he doesn't need to pull his punches against Adam (and still failed to move him out of the city block). Those same mental blocks that people tend to bring up, Mongul trained him during OWAW how to get past that.
