I don't think this is a general conclusion, as non of April 2014 applicants have been invited for taking the test in Calgary yet . Maybe, your wife's case is exceptional. ::) ::)
It's quite frustrating for Alberta applicants as things are moving along at a snail's pace here. So far early March applicants have gotten a test date here :'(
How could you apply before two years following your PR. I believe a typo happens in dates, Perhaps you meant :
Feb 2014 - applied for Citizenship
Apr 2015 - Test