It's objectively worse on the Ukrainian side. Imagine you haven't been able to leave your house in 4 years for fear you'll be grabbed by a draft officer. Russians do not know this fear.
To boot, many Russian men have been paid handsomely for their participation in the SMO and get to live nice lives abroad.
It's not like it's zero-sum though; the world outside Russia and as Ukraine isn't going to become so full that there's no room for more or them to leave to dodge fighting in a war, so the parent commenter can easily be happy for any of them regardless of their country of origin.
Did you just forget about the mobilization drive Russia had in 2022, where they grabbed young men off streets and from their houses?
It was very unpopular, lead to people fleeing the country, and was pushed out of the public eye as soon as they figured out how to forcefully volunteer people instead.