IMO, we should take out all the short passes (dink-and-dunks) to compare the phillosophy of a team.
A team may run the spread and throw a bunch of short passes that are just extension of the run game should not be considered as a pass-oriented team.
If anything, it's in name only.
For example, read this from the Falcons forums.
Their fans want the team to move to a WCO because they are tired of the dink-and-dunks in their passing game:
Next, look at these data that shows Schaub with 21.6% on deep attempts last year, while Yates was at 21.7%
Compare that with Brady 18.6%, Cutler 18.2%, and Brees at 17.6%, and you can see that the distinction between them and us becoming very blurry.
There are a host of other names on that list that should be familiar.
Also, there are plenty of teams that ran the WCO (even though everything aren't equal) like the Packers, the Eagles, the Niners, the Chiefs, the Cardinals, the Browns, and of course the Redskins.
Turner's Bears offense is also derived from the WCO as many other in the league today.
The Colts are now running the WCO; so do the Raiders.
It seems that at least half the league is running the WCO, so how can we say that the Texans are a run-first team?
And then many of the spread teams the spread are dinking-and-dunking plenty.
Who's to say that we're lacking in the passing game as compared to them?