They're not the same since Watt got hurt, but you're right that they still might be the best team in that crappy division.I mean, their point differential comes from getting housed by 3 teams that most people see as top 5 in the NFL (NE, DEN, MIN) they are -63 in those 3 loses and won their other five by a plus 33 including wins over the other 2 contenders in the division.
The Texans aren't particularly good, and it is most notable against top tier teams, but they are probably still the best team in that division.