This looks like it was done by ComicCraft, and possibly based on the widths of their font Achtung Baby (http://www2.comicbookfonts.com/e/env/0001NePEV58GtkopN4175z6/fonts/font_list.html?link=/fonts/DL/catalog.html&item=fonts:dl209) but it's been altered quite a bit. If it was done by DC Comics' usually letterers, they tend not to work on the computer, so it would have been done by hand. Some of the folks who letter for DC do use the computer, so it could be custom drawn on the computer as well.

Something similar: Angle Bold from Leslie Cabarga.

http://www.flashfonts.com/flashsite/fontspage.htm