Only WES will know what to give, probably they will evaluate as 2 years undergraduate diploma. I have seen WES evaluate UK 3 years bachelors as 4 years Canadian equivalent bachelors and they did 4 years Indian bachelors as 2 years diploma visa versa etc. It all depends on what institute you graduated from and what programs you have taken to study. The best answer will be go for the evaluation and see what they say.