I don't know. I'd be okay eeking out a close win. That would indicate to me that we are a little better than the Raiders at this point. Couple that with almost beating the Chargers in week 4 (and hopefully beating them at home, next week) would tell me that we are ay least competitive with the other teams in our division and have a shot at winning it.
Keep in mind that tomorrow's game only provides a snapshot of hoe good the Chiefs are now. They can continue to get better (or worse) as the season progresses. And history shows us that the teams who do well in the playoffs are the ones who are playing their best football at the end of the year.