You know that one creepy kid in middle school who was always doodling violent comics of Spawn or Boba Fett killing people in the margins of his notebook? ("And Valkyrie CUTS HIS ARM OFF!!!! And then Magneto DECAPITATES HER!!!!! YEAH!!!") That's what this reminds me off. So juvenile and gross.
I dropped the Ultimate books a while ago so I haven't been following this closely, but I'm guessing there's some kind of Mighty Max-ish "everyone dies but then he goes back in time and then everyone's alive again" reboot coming soon? I don't know how else they can justify such a gigantic bodycount.