Are you sure the time lines your friends provided is correct? I think it would be impossible for an application to be processed in 1 month. And impossible or almost impossible for the application to be processed in two months.
There are two steps to the sponsorship process (assuming you applied outland).
1) First the sponsor is approved (this step normally takes 1-2 months).
2) Then after the sponsor is approved, the applicant's part of the file is reviewed (this is the step that takes 5-11 months for Cairo applicants).
When your friends are staying that their applications are being approved in 1-2 months, I think they are only talking about step 1 in the application process.