Houston can win without the good running game if they're able to stop the other guys from passing effectively...which is a big part of why they've gotten better under Wade's DC. Again, teams can win by being really tough to pass against effectively and then by just limiting mistakes in their own passing games. That's a blueprint we've seen with teams like BAL and PIT in recent years. And, I'm guessing here, but I'd imagine being able to rely on a running game against certain defenses in order to avoid putting your passing game at risk of inefficiency is a tactical bonus when good pass defense teams are playing other good pass defense teams. It certainly doesn't hurt. At the end of the day, though, it's the passing efficiency differential that's going to determine the winner of the game more often that not. And that's where the good teams should be spending their time and resources trying to get better.