ukraine kills 14 russians for every dead ukrainian but russia somehow has a lot more dead ukrainians than ukraine has dead russians. this is probably because russia is advancing so it's able to recover dead bodies but are there any other reasons for this disparity?

>Kyiv said Moscow handed over 1,245 bodies on Monday, bringing the total to 6,057 in the past few days. It said it was now verifying whether all the bodies were indeed of Ukrainian soldiers.
>Russia put 6,060 the overall number of bodies transferred to Ukraine. It also said 78 bodies of Russian soldiers had been repatriated.
https://www.bbc.com/news/articles/cgeqddw1v1do