If you want to make that case, why should other Subclasses be able to give their team a free round win? Golden Gun is 3 shots, easily turned into 3 kills and a win. You can't do anything against a half-decent Gunslinger in Golden Gun, so would you still not deserve a second chance if that killed you? Even at that, self-res isn't massively difficult to counter. Every other Super barring Ward of Dawn has at least very good chance of beating it 1 on 1 (in any other engagement, your argument is invalid) if not being a guaranteed kill and revive-sniping accounts for a good chunk of the kills in ToO.