BWAHAHAHA! Never in a million years. Those estimates, if they are honest and not deliberately inflated by higher ups, would be based off consolidated BDA's filed by Russian field commanders. And in that case, they are going to be unintentionally inflated by at 10%. That's an honest error common to most modern militaries.
The idea that the published Russian estimates of Ukrainian casualties were understated is laughable.
I suppose last night, Tucker Carlson must have been a possessed Russian mouthpiece when he openly stated on his show that Ukraine was losing the conflict and losing it badly, huh?