It depends on how and when Armageddon occurs and how much of the population is wiped out in the initial event.  The best scenario is something that wipes out 99.999% of the human population in the first day, with that first day being sometime in fall.  There will not be any competition for resources, so it will be easy to stock up for the first winter, and you will have all winter to decompress and prepare for spring.  

The worst scenario is something that slowly kills off people or the food supply.  A starvation scenario allows the maximum amount of time for people to panic, loot, and consume/trash everything.  Your best bet here is to be prepared beforehand with a year or two of supplies.

Most of the people on reddit could easily survive the best scenario, provided they didn't go insane.    And in the real world, it is far more likely that the worst case scenario wold be the one to play out.