No it is not reasonable to assume. In fact, virtually every mutant power has been completely missrepresented and changed in this movie series. Further, almost every facet of the characters lives have been changed in this movie series, so just because something happens in one continuity doesn't mean it will happen in another. Further, the section is about his appearance in the movie, not in the comic, so any details from the comic are completely irrelevant for his character. And using his comic book powers for reasons why the film makers would bring him back is an opinion. His body is completely charaed. Every character said he is dead. The creators of the film have not gone on reccord saying he is coming back or hinting at it or anything of this nature. The mentioning of his near deathes happened in the comicbook, not in the movie. This section is about his appearance in the movie, therefore, adding comic information in reference to his comic character is irrelevent. Further, CAPITALIZING your words does not porve anything and is completely silly. Find a source that says he didn't die from the movie, or the creators, or anything. Do not use comic books as an argument. Although the films have basis in the comics, the film makers only take what they want and have shown considerable creative license throughout this film to change stories as they see fit (sebastian shaws origins and powers, weakening of magneto by only showing his magnetic abilities, making havok not be cyclopse's younger brother, changing mistiques origins, changing azazel's origins, etc). Therefore, you can only talk about Darwin's appearance in the movie, as he appears in the movie. His body is completely destroyed, every character said he is dead. The creators have said nothing about him being alive. Find a source that says his powers follow like the books and he is alive, then you have an argument. Unless you have some other argument beyond the comics, do not wast time arguing  .