only thing I can think of is that it can take 4+ months to get to OKC after getting on a referal list. When you make it that far, going to a PEPC can shave a month or so off the time it takes.

I went non PEPC and it was 6 months to the day from posting close out to get to OKC. Know another person who did PEPC, took about 5 months and another who did PEPC and they made it in 4-5 months. These were all VRA postings this year.