On WES evaluation
If let's say a person has a PhD degree, then everyone agrees he/she shall get 25 points. Now, there could still be 2 cases as far as WES evaluation is concerned. The person might...
1. Submit only PhD credentials, and the WES evaluation summary would read Canadian Equivalency : PhD (25 points).
2. Submit PhD, Masters, and Bachelor credentials, and the WES evaluation summary would still read the same although listing each of the three individually in detail. They assume (or evaluate) that the rest of the subordinate degrees are the requirements for this higher degree (PhD) here. Again, only 25 points, not any more.
Now, there could be cases where people have done multiple diplomas, multiple Bachelors, multiple Masters, or even multiple PhDs
-X). In these cases, one more point could be scored, as long as those degrees are mutually exclusive, i.e. they should not be the requirements for one another.
In your case, Diploma in Industrial Electronics is separate than the Bachelor in Computer Engineering, but the diploma is of duration 2 years, rather than stipulated three years for 22 points. Hence, you will get 21 points based on the WES summary.
Regards