Captain Marvel vs. Captain Marvel: This is a tough call. I'm going to give it to Carol, because Carol is always Captain Marvel, while Billy is only sometimes Captain Marvel. Shazam!'s additional INT bonus could make the difference in a stand up fight, however.
Ogre vs. Bulldozer: Bulldozer has damage resistance, so he has an edge. I suspect this one would be decided in about two hits, though.
Next up:
Spider-Woman (Jessica Drew) vs. Black Widow (Natasha Romanova)