Any source for those 2020 numbers? Afaik the Romanian Statistics Institute only published mortality figures up to (and including) November 2020, and the nominal numbers were indeed similar to Serbia’s, i.e. up until then we had had about 10% more deaths in the first 11 months of the year compared to the first 11 months of 2019 (with November 2020 a particular dire month).

It’s also true that I couldn’t find an easy comparison with the previous 5 years average.