As someone employed in university management, I can say that no-one has any respect for these grading systems. They are an annoyance that must be suffered. They are all highly subjective, despite their quantitative nature and claims to the contrary. It would be best if everyone ignored them.
Ex-FM Lieberman: Firebomb attack in Jerusalem a reminder that norm is Arab terror against Jews (Haar
from the article: Israeli universities drop in international rankings