I think #3's as good as you're going to get. Among other things (as can be noticed in the cover gallery), DC really couldn't even lampshade the difference, at least not on covers, because for the most part they can't use "Captain Marvel" on covers, even as secondary text.
It's possible that there's a good interior art lampshading somewhere, but none comes immediately to mind.
EDIT: Hmm, actually, I did find this splash page◊
, which spells it out pretty clearly!
edited 28th May '11 6:21:42 AM by suedenim