Reuab,
I recall making a post on another forum the day I spoke with that individual who worked on the boards. Here is what I said he had to say about tech EAs and the rated board 2 years ago:
"Today we had a distinguished visitor, the AFROTC deputy registrar, come talk to our class. He was a good source of knowledge considering he is in charge of all the scholarship selection boards and knows plenty about other selection boards. I am an electrical engineer major and I have always heard the rumor that as an engineer major I am at a disadvantage when it comes to going rated. I asked Mr. Mann if engineer majors are indeed at a disadvantage. What he revealed to me was that normally AFROTC accounts for 45% of their tech degree cadets to go rated. In the case of electrical engineers, computer engineers, and meteorology majors, they sometimes cap it at less than 45%. He went on to say that last year they capped those 3 majors at 25%. He said this year, FY13, they had an excess of computer engineers and therefore they were not capped. So if anyone else had heard this about engineers students, we now have some confirmation."
Hope you find this helpful.