Why are all the wild card teams the favorites this weekend?/ why?

cus the chargers are in the worst division in the nfl, and even though they are hot, their division sucks and started off the season crappy. the vikings, well u usually want a good starting qb and tavarias jackson sucks. the cardnils have been inconsistent, and are also in a crappy division, and have no defense. and the dolphins, well they are good, but the colts and ravens are hot as hell and playing amazing and i dont see the dolphins or chargers getting past them.