i don't think so regarding to receiving AOR ,but regarding to processing ,yeah maybe you are right ,sometimes it happens randomly ,every case is different ,for example you will not believe me if i tell you that applications from the city i live are processed specially ,such Oath Ceremony and test's date are within 2 days ,one day is for test date ,then second day is ceremony ,this is because the area where i live is so rural ,is located at North Western Ontario ,no immigrants here , Lol just me ,believe me