First, both of your studies are just abstracts. Do you have access to the full articles? Have you read their methods to see what their results actually were?
Anyone worth their salt in research knows the abstract isn't the full picture and makes your paper seem a lot more appealing than it is.
If you can't access more than the abstract you REALLY shouldn't be citing them as sources to back you up. This doesn't even get into how unreliable most long term studies are. They're not only extremly difficult to do, but they tend to come up with soupy statistics so researchers twist things to at least sound interesting.
I've rented the first one, but the second one I didn't because I read the actual book about the study it is based on. The one I linked to you can read on Amazon. All you would need to do is borrow the book I linked you from a library or purchase it and you'd get the same idea. It's widely considered one of the better studies on the subject.
Informed partially is true. But you are exposed to more as you get older and your behavior is shaped by those things. Behavior isn't simple, it's incredibly complex. GAF heavily leans liberal/anti religion. You think everyone, or hell, even 51% were raised that way? And those are some deep core values. That should be your first clue at how being raised really doesn't have that big of an influence in the long run.
Bad example Sean. What you did was participate in selection bias. When we actually look at the statistics regarding adults and their parents religion, it's remarkable the correlation. Nearly 60% of adults share the same faith as their parents. In statistical terms, that's an insane correlation.

On the graph above, you can read the study involved here.
Because I doubt you'll read it (it costs money, don't blame you), the summary states its conclusions well:
"What they found may come as a surprise: despite enormous changes in American society, a child is actually more likely to remain within the fold than leave it, and even the nonreligious are more likely to follow their parents' example than to rebel. And while outside forces do play a role, the crucial factor in whether a child keeps the faith is the presence of a strong fatherly bond. Mixing unprecedented data with gripping interviews and sharp analysis, Families and Faith offers a fascinating exploration of what allows a family to pass on its most deeply-held tradition--its faith."
Everyone who grows up into an adult will be impacted by different elements of their childhood rearing. Not all of them will take on the same precise learned aspects, and some will even take on few indeed. But the statistical curve shows an undeniable trend in one simple direction: that the way you're raised as a child has a massive impact on how you will be as an adult. As with the rest of this discussion, it's more complicated than that - there are other factors that play a huge role in how you are as an adult as well. But it is what it is. Nurture plays a vital role as well.
And just to emphasize... we already have the statistics for obesity in regards to this. 80% of children who had obese parents will be obese themselves throughout their lives.