Wonder Man did beat Rulk with the Million Dollar Dream hold stolen from Ted DiBiase.
WBN choked the Savage Hulk out with a hold of his own.
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Hulk is a tough case, because his nigh-invulnerability, regen and rather unique physiology in general that make him ignore most attacks.
But Cassie not only has her extreme skill and body-reading ability here, she also has the super-strength, super-speed and WoS.
And since it's a forum discussion, hard not to bring up the possibility of spam-attacks.
It's not some anti-Hulk thing; people do the same in Spider-Man ("omfg, his webs stopped a tsunami!!!!!!"😉 or Cyclops ("GOML Blast for the win!!!!!!"😉 threads.
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And, as admitted several times already, it's all based on speculation and what we know about Cassie and the Shazam powerset... there's little more to work with, frankly, given how brief that power-up was.