Time to Being Approved...

I know most people say to expect the time from submitting an application for citizenship by descent to be about 2-3 years but I was wondering, is that because most people don't have all the paperwork proof and it needs to be located? My brother and I have I think all the paperwork to prove citizenship by descent including grandparents passports from the 1920s and my grandfather's German military records, their birth certificates, marriage license, and a ton more paperwork. Do you think the process will be quicker for us because of that?