Originally Posted by
XPac
It's boring for the hero to easily be able to one shot kill any enemy they face. If every foe Thor fought died anytime he hit them with his hammer, Thor fights would be over pretty quick. If any foe Cap hit with his shield, or Spider-Man hit with his webs were instantly killed, same problem. Yes, a writer can figure out ways for Caps villain not to be hit by his shield but it's probably just mroe sensible to have it so that villains don't die when they are hit by it.
Blade having one shot kills against random vamps is fine. The problem is the aspects of the gun which allow it to kill ANY demon or supernatural enemy. The point shouldn't be to make it easier for the heroes... they're going to win no matter what, so it's not really a problem. The point is to make it harder. Again, they'll win anyways so stacking the deck against them in the long run is usually moot.