Website by the IRCC about TR- PR is just for a reference. It is not explaining about how many credits applicants should earn.
For example, if someone have completed 2-year education within 1 year, by hard work, it will be treated as 2-year education.
See the rule about Post Graduate Work Permit.
Or, some schools offer 1-year accelerated programs equivalent to 4-seemster education. It will be accepted as 2-year or 16-month education.
If the application is denied just because the calendar day is 1 year, even though he/she earned the whole credits for 2-year education, the applicant can go to the court, I believe.