To give a basic overview of the starting situation of the campaign:
The early summer of 1943 represents the last time that the Wehrmacht was somewhat in a position to mount an offensive in the east. Unfortunately for them they only had the forces available to do it in one sector and they concentrated forces where the Red Army was strong and the Kursk operation was doomed from the start.
Historical play here is suicide for the Germans, you just lack the weight of force to sustain the offensive. Well, until someone proves otherwise
Both players start out with a lot of units in static mode. For the Germans you start out with most of AGN and a good chunk of AGS in static mode. Both players will have to decide how to spend their AP in the opening turns.
For the Luftwaffe the situation is mixed. The Luftwaffe has very experienced fighter squadrons at this point but there simply are just not enough fighters to counter being outnumbered 6:1. On the other hand most of the bomberwaffe is comprised of obsolete stukas and limited range He 111's. To make matters worse, the best fighter the Luftwaffe has, the FW 190 is produced at pitiful numbers.
The Wehrmacht suffers from bugs in this scenario. A good chunk of the wehrmacht's best equipment is tied up in support units (e.g. most of the Panthers and Tigers) and is near useless on the defence. With the Wehrmacht having to switch to a full defensive posture mid-1943 this is obviously bad for the German player. With v1.04 defensive SU get fixed so this should make life harder for the Soviet player attacking reinforced hexes.