Easy to kill? Because a pack of dogs is just as easy to deal with than a single mutt, yeah? :|
I've killed several teams in the past, that doesn't make it an easy feat though. Obviously if we are talking about a team of newbies which do not know their way around the map then i can see why one might consider them "easy" but half of these instances are experienced players and both have gone through enough chests to split the spoils without either person being at too great of a loss. A single player can find multiples of the same items so rarely is it a case of one person being stacked while the other runs around bare or that both have a half-armed stock.