Overall I think it's a pretty fair assessment, but I'd go even farther and break down the O-Lines of the two teams on both their run and pass blocking. I think that Detroit is cleary better in the pass blocking department, but I think the Texans have the advantage when it comes to run blocking. The new zone blocking scheme seems to fit DD like a glove, and I look for him to have a big year.
I can't say I agree with your assessment of the WRs. Even with a healthy Rogers I would call it a push compared with our WRs. Tai Streets hasn't really shown much, and I think someone noted in another thread that Hakim has fumbling problems. The Texans, on the other hand, have AJ (everyone already knows what he can do) with Bradford (big play threat meant to stretch the field) and then Gaffney who's a very good 3rd down receiver and great in the slot. Armstrong is our 4th WR who has excellent hands like Gaffney, and looks to have good quickness. Then Kendrick Starling rounds out the bunch, but likely won't see any time in the game at WR. It should be a great game, and I look for the Texans to win a close one.