Because you wouldn't get a random weapon, you'd get one of those two. It's more of a gamble because you have a 50% chance of something really good, but an equal chance of getting crap. Yeah...agreed. For some maps (Jungle, I'm looking at you) it could be really op. OK, so it's like this: You buy the Nuke item. A few seconds go buy, and it tells you if you got it or not. If you did, then it's added to your inventory in the killstreak slot. When you press the killstreak button, it brings up the map as if you were firing a mortar strike. No matter what you do, it will kill all zombies, but the extra time spent bringing up the map/choosing a "spot" could lead to your death, further nerfing the perk.