(Annoying color tags removed for readability)
By "panzer IV" i meaned panzer IV G (the german panzer of Ro2).
Panzer IV F1 is not in RO 2.
Neither is the Panther or T-34/85. I was giving you a history lesson, and demonstrating how the Panzer 4 F2/early-G that we have in-game was a stop-gap measure to give the Germans
some ability to survive against the T-34/76, until they could get a proper tank built and designed. It was very much as Mekh said; it was re-designed so that the Germans weren't completely outclassed, but it far from being "the tank to beat the T-34."
Panzer IV G have been created to counter T 34 76, T 34 85 to counter Panzer IV G and late versions, Panther to counter T 34 85.
If i remenber well :
Panther created near september 44.
T 34 85 created in late 43.
You remember poorly. The Panther prototype was made in November 1942, while the first of the main production line were assigned in January 1943, (their first major combat operation for the Panther was the Battle of Kursk, starting June 5 that year).
The T-34/85 appears to have had its first short-production testing run in February-March 1944, with the full production run coming later. That's most of a year after the Panther had its combat debut, more than a year since the Panther started coming off the assembly lines, and even more since the Panther was designed. Unless the Germans were seeing the future, there was no T-34/85 for them to build the Panther to defeat.