Scatter Angle:
Panzer IV: 7.5
Sherman: 6.0
Scatter Distance:
Panzer IV: 6.4
Sherman: 6.2
Uh, USF is late 1944. The US Army was very stubborn and refused to accept the 76mm Shermans as a replacement despite superior AT performance. In their minds, Shermans weren't supposed to fight Tanks, they were supposed to fight Infantry and Fortifications, and for this the Army kept using low velocity guns because of their superior HE round. They believed that Tank Destroyers were supposed to kill tanks, although this is poorly represented because the USF Tank Destroyers in CoH2 lack their real-life advantages.
The US Army didn't change their minds until losses incurred during the Ardennes Counteroffensive which were the result of Tank Destroyers being too few and Shermans being incapable of fighting Panzers efficiently. It was after this that Eisenhower finally gave the order to cease production and delivery of 75mm Shermans and send only 76mm Shermans.
This is a myth.
https://www.youtube.com/watch?v=bNjp_4jY8pY
20:00