Is an affidavit of counsel sufficient to be considered sufficient in a civil case?

It is true that an affidavit of counsel was treated as sufficient in Engstrom v. Superior Court, 20 Cal.App.3d 240, 97 Cal.Rptr. 484. In that case, however, counsel swore to facts that had been testified to at a preliminary hearing and to facts that appeared in pretrial statements of prosecution witnesses. He also set forth in considerable detail his client's version of the argument that led to the shooting and of the shooting itself, a version which, if believed, would make a prima facie case of self-defense. For these reasons the requirements for 'specific facts' and 'full detail' appear to have been satisfied in that case.