I was mostly fishing to see if he'd ever tried to compare similar discrete vs. opamp implementations, not trying to imply that they can always be made to be equal. Now, hearing that his listening experience is somewhat limited in the scope of comparison (cheap opamps) I have a good frame of reference to qualify his rather strong hatred of opamps.
Don't get me wrong, the best equipment that I've heard is a fully discrete design (amb's beta22) but I've also heard opamp based designs that sounded pretty good. I don't think that either of my sources, both of which are chips based, sound particularly awful either or mid-fi. Now that might just be my frame of reference and a measure of my wallet but the blanket dismissal of the opamp doesn't sit well with me.