I asked the same question when I switched out the Sherman MFU for the JS-2. It was explained to me that they are interchangeable and I've had no issues using the Sherman DMD with the Russian MFU. Since recoil and sound are MFU functions, it makes sense.

Drive, steering, rotation and elevation would be similar between tanks, which is all DMD.

The DMD I tested the M4 MFU with was the Panther, which is the same used in the Tiger.