This isn't too related to this conversation atm but I had a question and this seems like the most suitable place for it.
We know that upgrading tanks will improve their firepower, armour etc, is this true for all tank variants?
specifically do higher level mobile artillery and rocket tanks have better attack. If we want to get powerful mobile artillery are we going to have to fit artillery pieces onto tiger tank bodies or does artillery improve separately with different techs? (e.g. power of artillery tanks is dictated by artillery tech).