So we can dissect the details. Jeff Garcia ran around making plays all day. Gus Frerotte took too many sacks (one series of sacks took the Vikes out of field goal range). Brad Childress made some questionable calls. Adrian Peterson wasn't on the field when the game was on the line. Cedric Griffin is a weak link in the secondary. It's all true.
In a close game, we can pick out a few key plays, a few key calls, a few key mistakes that swung the game. In every Viking loss this season, we could do that. In every Viking win this season, the Vikings' opponent could do that.
But that's that: until the Vikings control a game from beginning to end, until they play a consistently good game, until they dominate an opponent and win by 14+ points, they're just a .500 team. Certainly they're capable of improving and doing better, but they've shown us enough to make us think they won't.