In no discussion about greatness will you see someone say “they were VNL champions” but saying “European champion” just has more value to it, and its a fact.
you don't even know the difference between an opinion and a fact. Let me educate you:
Turkey winning VNL: A fact
You thinking ECh is more important than VNL: An opinion
VNL having higher competition coefficient: A fact
You thinking it is a bad idea: An opinion
I hope this helps