Is the Absolute Primacy of Christ A-Historical?

Fr. Maximiliam Mary has a post up here defending the primacy of Christ against a Jesuit critic on the issue of whether contrafactuals are ahistorical. There is also a link in the article to an article written by Dietrich von Hildebrand about Teillard de Chardin, who may not be the most relevant theologian today, but one does here his name mentioned from time to time.