I will provide some equipment germany has,tell what BR it is at and why it should be moved,then the BR it should be.
MP 18-this is a BR2 SMG,but has a worse preformance than BR1 SMGs.looking at stats alone,it is slightly worse than the MP34 (ö) in terms of recoil,and the model of the magazine takes up most of the left side of the screen when aiming.this gun should go to BR1.
R75-the motorcycle avalible to germany for the rider class at BR2,and that should tell you all you need.if you have heard anything about riders,you know they are the most useless class in game.this veichle should be moved BR1.
panzerwhefer 42-a truck avalible to buy at BR4 with 20 rockets and a mounted MG42.at the same BR for the same price,you can get the calliope,which is an improvement in general.
armour -the panzerwhefer has an average thickness of around 5mms of armour and thickest of 15mms (the tracks),so any AT weapon in game can penetrate and easily kill it,even BR1 AT rifles,and even artillery can kill you in this.the calliope has the normal armour of a sherman,not much to say,infinitely more survivable than the truck with rockets.
armament -the panzerwhefer has 20 rockets which are slightly stronger than the calliopes,but are on the back of the truck and its possible to kill yourself with it by shooting the back of the cab,has a slower (I think,could be wrong) reload than the calliopes rockets and a lot less rockets,with the calliope having 60 rockets mounted on top of the turret.the panzerwhefer has a MG42 on the front of the truck,but has limited traverse and overheats very quickly,whereas the calliope has a M1919 in the turret which overheats a lot slower and traverses with the turret.in addition,the calliope has a short 75mm M3 cannon,one of the best cannons for infantry support in the game with a high amount HE filler with a decent fire rate.
In conclusion,the calliope is just plain better than the panzerwhefer,and it should be moved to BR3 where it can be easily destroyed regardless of what BR it fights.
This is just a few things I could think of off the top of my head,if I can think of any more I will make another topic,but feel free to suggest more.