I played on WaW with high ping (around 180ms) and noticed that some shots get lost on the way from Europe to America. It is frustrating but it could be an explanation why sometimes the hits do not count. Only things that can be reproduced should be tanken into account. Things that happen accidentally or from time to time may have other causes than a software bug. So if something strange happens to you in game try to reproduce it by testing on an empty map. If it still happens then it may be a bug if not it may have something to do with the online connection.
A week ago somebody tried to kill my sherman iv shooting faust at front armor and after 2 shots i had only 1 red bar. I hope he won't complain here that he didn't manage to kill my tank.
Question about Panzer V: Why is his rear armor so thick that it cannot be penetrated by 75mm APCBC? Is there no weak spot at his rear? If not why?
I played Sidi Bou Zid with a 100ms ping and fired twice at the tigers back from about 250 m and he didn't bother because he didn't receive any damage. I could see the impact dot between the two tubes at his back and the tiger shaking each time.
I found this wikipedia quote, but I don't know if it is correct:
"The British 17-pounder as used on the Sherman Firefly, firing its normal APCBC ammunition, could penetrate the front out to 1000 m." here:
http://en.wikipedia.org/wiki/Tiger_I#Gun_and_armour_performance