And thinking about it, whay I said didn't make sense neither, russian would still be the great majority of users doing 5 to 99 edits each. Don't know how easy is to find this info, but a better measure would be (number of edits in russian) / (number of russian speakers) by country.
I have the same question. You’d think the majority of edits would come from Russia when the content is about Russia. Then again it may be because of conflicts between the west and Russia, considering Wikipedia is at least western leaning.