It seems to me that the DCU is just too light and whimsy. Most of the superheroes like Superman, Batman, Batgirl, Green Lantern Corps, the Teen Titans, the Ravagers, the Earth 2 heroes and Aquaman are boy scout heroes that refuse to kill under any circumstances. I think this is the reason DC always lags behind Marvel in sales. Marvel has heroes who are darker and kill more frequently like Thor, the Inhumans, Wolverine, Psylocke, Rogue, Scarlet Witch. The Illuminati are happily destroying lots of planets right now and their book is selling very well. Shouldn't the DCU be darker and grittier like the Marvel universe as well? Man of Steel showed that Superman was willing to kill so he should be snapping his enemies necks so they don't bother him again. Batman should either kill or cripple his enemies. The Green Lanterns can easily conjure up weapons to kill their enemies, since they have the Guardians' approval to kill from back in the Sinestro Corps War.