The problem is, the later the draft goes, the less likely a team is to find a quality starting QB. This is actually a pretty good overview of the last 13 years of QB draft picks. Granted, it's a bit subjective in terms of evaluations and cutoffs, but the underlying data has a list of QBs that drives the point home. Your odds of finding someone who might even be passable declines dramatically with every round. Now, granted, the Texans might be of the opinion that Matt Schaub could be salvaged or they could make a run at a free agent QB. There is also something to be said for trusting your scouts and talent evaluators to make the right decision. But, if they need a franchise QB, the odds favor taking Bridgewater 1.1 over, say, taking Aaron Murray at 4.1.