He might be referring to one of the b.o. threads after Man of Steel's opening weekend where me, Kswiston & another poster got confused as to worldwide projections vs. foreign projections; I took a 600 mil projection to mean foreign only instead of worldwide. That was cleared up within the day, though
He might just be talking out of his ass, though. Which he does pretty frequently. Almost nonstop, actually
Funny story: I'm on vacation right now. The hotel we're staying at has a HUGE rack of DVDs for the tenants. Wife didn't remember if she'd ever watched Superman Returns. So we took it back to the room and put it on. As the opening credits play, she goes "We JUST watched this, didn't we?" and I say "no, that was Superman: The Movie, we watched that a couple months ago. This just has really similar opening credits."
About 40 minutes pass, and she goes "oh yeah. Okay. Lex Luthor makes an island in the atlantic and Parker Posey should have been Lois Lane. I remember this."
She fell asleep 10 minutes later.
edit: Also, looks like Den of Geek reviewed the score
http://www.denofgeek.com/movies/man-of-steel/26228/music-in-film-man-of-steel-soundtrack-review - pretty interesting read, and not just because they used my remix as an example of how Zimmer was definitely being subtle (yes, subtle) about referencing Williams within that score.