I would say in a long paragraph
In 2019/2020,Lewandowski deserved the award for sure,a goalscoring machine and one of the most important factors of 6championships in one year.Phenomenon in all tournaments UCL,Bundesliga and DFB Pokal but France football had cancelled for a childlish reason,which I'm sure that if Messi and Ronaldo performed on this level at 2019/2020,they wouldn't cancel for sure.
In2020/2021,I would say in regular season like UCL,domestic league and cup,Lewandowski is still perform better than Messi in all of that regard.Messi may have a better number of assists,chances created and dribbles completed but they play in different roles.Messi had played in false9,right winger and sometimes cam during Koeman era,while Lewan had played in pure striker all during the season.I would still say that Lewandowski had performed better than Messi during all the season too.Unfortunately Lewandowski got an injured and then he missed very important matches against PSG in UCL and i'm sure that if Bayern had Lewandowski in match vs PSG,Bayern would win UCL in 2020/2021 for sure.
I would say the most important factor that bring goldenball to Messi is his performances in Copa America,he had performed really well in this tournament.He was a top goalscorers(4goals) and a top assister(5assists) in that tournament and other stats like dribbles,chances created,free kicks and through balls,he was on top of the tournament too.That was an excellent performances for me.
I suspect France Football idiotic reasons about cancelled this award in 2020,It's not fair and justice for me.I still mad about this,France football should host the 2020 Ballandor or they should give the award in last year(2020) for Lewandowski,I'm sure that everyone in this planet has no issue or doubt about Lewansowki for sure.In 2021,I think Lewan or Messi,whoever(from both) deserves the award in different reasons.
Lewandowski deserves the Ballandor,he win the award in my small heart.