1. I should caviate this by saying that I went to the same school as MIDNJAC so my comparison between NROTC and AFROTC was for the same units that he saw, just a couple years before he did. I also happened to live with an AFROTC guy so we spent lots of time comparing and contrasting how each other's ROTC options. Our impression, three years ago, was that it was easier to get a pilot slot through NROTC than through AFROTC. It
seemed like guys without engineering degrees, who weren't the top one, two, or three in their class were able to pick up pilot or NFO slots with relative ease out of NROTC. That didn't seem to be true for the AFROTC types. My business major roommate was essentially told by his CO that if he wasn't a science/engineering major he could kiss a pilot slot goodbye. He ended up still getting a nav slot and flies on AC-130s. By the same token it
seemed like the majority of the AF types in Pensicola were academy vice ROTC, but I think the sample size was probably a little too small to make any real judgement about the differences. Truth be told I could be completely wrong about whether or not it's easier to get a pilot slot out of either ROTC source.
2. If you get picked up for advanced standing as a college program type, I don't think it will make any difference to the selection board. I only know two guys who've got a pilot slot after commissioning. That said, they're also the only two guys I've ever known who were college program types for all four years of college. By that logic maybe it helps your chances to stay college program