Though the war was over when Hitler comiitted suicide, if he had chosen to leave Berlin and hole up in the Alps somewhere, the war might have gone on for some weeks or months longer.....if he had tried to disappear to Sth America or somewhere, the world would still be full of rumours and nutbags trying to glanourize him. So IMO the death of Hitler was still the most significant death of the war.
An interesting what if is if Hitler had been captured.......would the Nurnberg trial still have proceeded????