Since when you believe what mr Prigozhin says?
I recently saw a video of Prygo speaking about the forces of Ukraine, as he believed or wanted the world the believe he knew... Information supplied by the enemy is always dis-information. No real exceptions. However, you may infer what they known and do not know because there is a torrent of subtle information in the mis-information about the psychology of the enemy.
RE tanks and supplies, it is not even about the big numbers, but also about the quality. It is not the same to use proper ultra-high-tech components fresh from a Raytheon manufacturing facility than to dis-assemble a North Korean dishwasher and fit the engine to the hydraulic system of your T-60 turret. Yes, the T-60 is still a tank, but has no chance against even older ATs not to mention a newer generation tank afresh from Germany or US.