It'd be interesting to know the real casualty numbers on both sides. I definitely don't trust the Russia numbers, since the Russia regime has proven to not be trustworthy and it took them this long to admin any losses, but I'm also not sure what to think of the officlal Ukrainian numbers. Considering the unexpectely slow Russian progress, I'm kind of thinking they might be true, but Ukraine is also not releasing information about its own losses. I can see two potential reasons for it: not letting the enemy know, and not releasing the numbers in order to not worry own population. It's also possible the truth is somewhere between, but actual progress does seem to hint at the truth being closer to Ukrainian numbers than Russian numbers.