Hi I am also a CPA,CA. However my first designation was obtained when I successfully completed the Chartered Accountants Program in Australia.
I got an ECA from WES stating that my Australian CA had the 'Canadian equivalent' of a 'Postgraduate Diploma' (1 year). Under this scenario I was able to claim the '2 or more degrees, diplomas option' when combined with the ECA for my 'Bachelors Degree'.
Hope this helps.