I have both right now and red death is very different. Low rate of fire but really high impact which makes it good for headshots at close to mid range. Right now, the bad juju has a high rate of fire but it's impact is way too low right now. If they buff the impact of the bad juju it would be an awesome close range weapon for pvp or pve when your dealing with lots of monsters at once. Red death allows you to hang back a bit more because of the range it has.