I agree with taking things in context, but I posted this to show that the mighty Tiger II was not without its detractors.
Dave, glad to hear from a "real" armor officer. It offers a good counterpoint to us amateurs. These live-fire testings are of interest because it can show the actual effectiveness of weapons against a production combat vehicle. In WW2, so the story goes, the Ordnance department tested the M1 76mm gun against 4-inch steel plate to test its effetiveness against the Panther. The gun was mounted in later Sherman tanks and the M18 tank destroyers. Eisenhower, et.al. were informed that this gun would penetrate any tank the Germans had! The field results were much different. It turned out that Ordnance tested the gun against VERTICAL armor plate, not angled as seen on the Panther glacis plate.
There was another interesting report in one volume of the "Report of Operations, First US Army" that covered a field test where captured Panthers were fired on by various US Army weapons. It's interesting to see the actual effectiveness of various weapons against a real target.
This was presented as "food for thought" and to get discussion going.
Gary