Definitely more in 3e/3.5.
However, I need to add a caveat to that statement. I hate save-or-die effects. I prefer "save or be dying," "save or be badly injured," "save or suffer some other really nasty effect." But I don't want someone to be taken out of play, forced to sit around and watch everyone else having fun, by a single bad roll.
So I've tended to modify save-or-die throughout all the editions--1st, 2nd, and 3rd--and that may have impacted the death toll.
Still, in terms of deaths brought about through combat, injuries, non-insta-kill spells, and the like, 3E all the way.