What criteria is used to formulate such statement?
Doubtless the key word is "consistently", at least as seen from a Jewish perspective.
If you wish to learn the Catholic perspective itself, I'd recommend this link.
You will notice there that, while several other prelates are mentioned, Bishop Preysing is given highest honors.
Indeed, for whatever my opinion might be worth, Preysing's views most closely resemble those of the previous Pope, Pius XI, who appointed Preysing Bishop of Berlin in 1935.
And that is no doubt one reason why Pius XII elevated Preysing to Cardinal in 1946.