According to rybar.
"The guys from the field report massively that the enemy's equipment was marked with our tactical insignia, i.e. "Z" and "V", which caused confusion in the first hours of the battle, when the front collapsed. If that's the case, then the enemy has an American network-centric battle control system, with all units on the battlefield tied in a grid and marked on computers, even at the company level, not to mention the battalion regiment. So, even a company sergeant in Humvee, BMP or T-64 sees on the screen, where their own and where others and he does not care what marks on the armor. If so, it is very bad, because is a qualitatively new level of control of troops. And our retreat is a consequence of the loss of the equation."
So the Ukrainians use an American grid system and uses star link satellite communications.
Do Russians have satellite communications or a grid system to tell friend from foe? Or a real time system to look at the location of the artillery? And order counter battery fire? If not then this is a large discrepancy to bridge and would be hard for the Russians to stem the losses.