Regarding the death of Mary Jane in Peter Parker: Spider-Man (Vol. 2) #13, view the last panel in the penultimate page : before the plane blows up, you can see the "baggage compartiment" (*) door in the back of the plane being eject....sure so the "loolypop guy" and MJ can jump off the plane ( in the last page - the plane blowing - note than the baggage door is wide open). So there you are...
(*) i dont know if this is the right translation to english - its the big door in the back of the plane where the baggage and storage is.
Looks like somebody reads these comics a bit more carefully than I do! Thanks Gustavo. Told you folks she wasn't dead. Ed.