Even after some heavy editing by mom, Deadpool is definitely a "not appropriate for children" comic series. This is of course, exactly why our kids like it.
"Deadpool kills Deadpool" pushes the usual sort of Deadpool ridiculousness to new frontiers inhabited by alternative universe Deadpools like Dinodeadpool, Lady Deadpool, Squirrelpool and the boys' favorite: Pandapool. And of course they are all trying to kill one another, for some fairly abstruse meta-narrative reason that one would think might be difficult to explain to a seven year old.
But the only thing that really troubled Ansel about the story was that Pandapool didn't survive.