I have nothing to back this up other than personal observation, but a possible reason you're seeing a higher number of civilian pilots getting interviews vs mil than you would expect. I think more mil applicants these days are retirees. This is based mostly off of the group of guys I know who are applying; perhaps there are just as many younger pilots coming from the military, but I haven't seen it. So if you're an airline and you have a concern about building a new hire group that consists mostly of 43-45 year olds, maybe you decide to get younger applicants who tend to be non-mil.