Thank you so much for that, I am really impressed with your quickness.
If you look in the Yeshurun that I quoted you will see he dedicated about 20 pages analyzing the difference between the Chazon Ish and the MB (citing many contradictions and explanations).
Do you understand what it means when he writes ‘Pesak Hamekubal’? The MB is about 95 percent direct quotes from the nosey Kelim and the two he quotes the most is the Chayay Adom and the Pri Megadim (Artzos Hachaim in vol 1 or Tosfos Shabbos in 3). It also was their derech to do this also as was the Shach and many others.
You agree though that in Europe he was the de facto, go to sefer.