I still have a set of Marshall Rogers Batman prints somewhere in storage. Here are a couple of examples of his work, covers from Detective Comics. It’s hard to see from them what set Rogers apart, unfortunately.
http://www.comic-covers.com/DC/DCC-G/DetectiveComics/imagepages/image474.html
http://www.comic-covers.com/DC/DCC-G/DetectiveComics/imagepages/image476.html
http://www.comic-covers.com/DC/DCC-G/DetectiveComics/imagepages/image477.html
http://www.dccomics.com/media/covers/1269_400×600.jpg