Ukraine

I think that 31000 doesn't include wounded while the 410k does. So comparable number would be something like 3-4 times that (2-3 wounded per 1 dead). That of course still means that Russia is losing personnel roughly 4 times more and (based on loose estimation on what I've gathered from the news) the ones wounded on Ukrainian side are far more likely to rejoin the fight after recovery.

The problem is that Russia still has literally millions of people to throw in and they don't really care about personnel losses while Ukraine is struggling to have enough hardware for their troops to keep the fight going, specially with artillery. I really, really hope that specially EU can get their shit together and provide enough support for Ukraine as any kind of victory for Russia would be catastrophic to rest of the Europe in coming years.