"They ran only 37% of the time last year."
And, they were 7-9 last year.
They ran 44% of the time in 2006 where they went to the NFC Championship. Talking about offense in general also says nothing about how good your defense is -- offense doesn't win games alone.
Not every team uses the WCO "in some ways." The power running game of the Vikings or the Titans are in no way a WCO. The Cowboys or last year's Patriots are passing-based but more vertical. The 2007 Eagles passed nearly 60% of the time, with a RB that figures prominantly into the passing game and a relatively low YPA indicating more short routes -- this is a WCO. This year they've thrown 57% of the time so far (almost as much as last year) and nobody's calling them a weak team. Indeed, Westbrook is a better rusher than Bush, but the team isn't based around his ability to churn out yards on the ground anyway so who cares. The Saints have learned to live with Bush's mediocrity on the ground and found a role for him where he can be an elite player. Good for them and good for Bush, I say.