Possibly, they used an awful lot of old T-72s and very few more modern tanks.
Given the nature of the combined arms operation, there are essentially no tank battles. Tanks and infantry are sent in to mop up only after the artillery has smashed a UFA position.
The only actual modern tank the Orcs have is the 15-20 T-14 Armatas which are confined to parades and even then needs to be accompanied by a tow truck.
All the rest of their newer tanks are upgraded versions of the T-72 family.
A vast majority of the T-72’s the Russians have lost were modernized ones such as the T-72B2 and B3.
These along with the T-90 (originally called the T-72BU) equipped most of the tank units assigned to the elite 2nd “Taman” Guards Motor Rifle Division.