I guess he already is just because he dared to invent something to model tube amps accurately which is - as every real tube fanatic knows - impossible by definition. /sarcasm offI'm glad there is someone like Cliff who can point on this things without getting assented as a jerk by some tube fanatics.
This post is a great read again. Thanks Cliff. I'm playing a lot with all those parameters in the speaker tab at the moment trying to find the best match for my Celestion Century Vintage loaded cab. This has turned out to be quite hard as first of all Celestion doesn't publish all needed data to do this by theory. And secondly I find quite a few different settings which just sound so good that I can't decide which one to choose. The knowledge I can try to match certain power tubes doesn't make it any easier.