the biggest victory in Texans history to me was the Cowboys game. Until we get to the playoffs, or a game that decides the playoff's then we aren't going to have an 'biggest victory' game, IMHO.
As for the rankings, who cares what a bunch of sports analysts, that are batting about as good as weathermen when it comes to predictions, thinks?
Hope we stay in the 'experts' middle to low rankings. Nothing like flying under the radar and surprising a few teams when we take them down.