Unless you feel winning out is going to be a breeze we don't have total and firm control over the East, either. Not saying it can't happen, but what have you seen from the Bills level of play that suggests it is likely?
I just don't see why we're worrying more about KC than Miami at this moment. Let's say they win today but we take them down in Buffalo - there's still plenty of possibilities where we could lose the division.
If the Dolphins lose today and we beat them (and the Jets), then I'll turn my focus to KC