"They have moved since July 12, in some areas of the front, at a rate of 3.5 miles a day; in others the rate of advance has been about 1.3 miles a day.
"The Germans in the first summer of their invasion of Russia advanced in the first ten days of the campaign twenty to twenty-seven miles daily; during the entire summer and fall of 1941 the enemy averaged an advance of 3.7 to five miles a day.
In 1942, at the start of their great summer offensive, the Germans averaged eleven miles a day, although this was greatly slowed later."
In short: in 1943 the Germans are retreating at roughly the same rate they advanced in 1941 & 1942.
Yep. Dates, starting points and stopping points can be analyzed differently but in dividing the war between Germany having overall strategic initiative in Russia versus Soviets having overall strategic initiative, both sides were roughly equal. Germany had the general initiative for 25 months between 6/41 and 7/43 while the Soviets had it for 21 months between 8/43 and 5/45.
When one does this analysis based on the German-Russian line on June 20, 1941, the Germans can be said to have run out of Russia significantly faster than they advanced into it.