And for board game lovers here are some counters to look at.
Drive to Stalingrad (DoS) above shows the Jaeger Division as 2/3rd of a standard German Infantry division which was how most games depicted them. (because of the 6 versus 9 Bn’s) The Italian Sforzesca Diivision was depicted as a motorized unit for some reason in the game. However if we ignore its movement allowance its strength of 3 suggests that it was rated as 1/3rd of a standard German Division.
Russian units had variable strengths partly because of the game system used in DoS. They were deployed on map showing U for untried and their strength was hidden until combat when they were flipped to reveal their strength. (Attack-Defense-Movement) Russian units could vary in strength from 0 up to 10/11. Back in 1977 there would few resources for checking out exact figures for Russian units so I would assume they are guesses or just random figures to add to the uncertainty of combat in the game. Most of the Russian units are rated quite low (0-4), anything above 8 is rare or exceptional.
Campaign to Stalingrad (CtS) has the Sforzesca as an Infantry Division and its strength actually compares quite well to the rough PzC figure I calculated, well maybe a bit lower.
The Jaeger Division is rated slightly higher than two thirds in DoS for its attack strength but exactly 2/3rd for its defense strength.
Russian units in CtS have similar type strength and are less varied. The 3 shown are actually representative of the mix. However I would have to check to see if they start the game at full strength or reduced. (flipped to weaker side) If they do not start reduced the Russian units are clearly rated slightly higher than they are in PzC. In theory a German Division in CtS will have a harder job shifting a Pussian Division without help from the panzers or Corps support.