[Dr. Boogie]

Captain America is dead, and there's no way that he's coming back to life/isn't dead. I mean, this is Marvel we're talking about. All their storylines are well thought out and grounded firmly in reality. It's not as if they would just present some insanely idiotic reason for Cap's return, like that the Captain who died was really a robot double of the Cap, or that Captain America was teleported into a child's ball in order to save him from his own death, or that the real Captain America nearly died, but was saved by the "Destiny Force".

I mean, this is a comic book. The authors can't just go around making up whatever they please and asking their audience to suspend their disblief.