This is a speculation based on previous experiences of applicants and this shall not be the final as I'm not the assessing agent
It depends on the number of years the Poly technical course is and the credentials on each semester
Most of the Technical diplomas from foreign institutions are equivalent to the following -
Secondary school diploma and diploma (two years) Canadian equivalency by WES
Level of Education - TWO YEAR PROGRAM AT A UNIVERSITY, COLLEGE, TRADE OR TECHNICAL SCHOOL OR OTHER INSTITUTE
Chances of this Assessment from WES is +90%