The Mets are pretty clearly a little better than the Braves for the next season, or couple of seasons. After that they are going to be in for some rough times, while AA has positioned the Braves to be a 90+ win team for the next 4-5 years.
The unsustainable offense the Braves posted last year has quite a few Braves fans thinking the offense is better than it probably will be. Ozuna, TDA and Swanson are in for some significant regression. The boost from a full season of Albies will help offset some of that, but not if someone else gets injured. Nobody had an unlucky year for the Braves in 2020.
Even though the Mets are probably 1-2 wins better in terms of true talent, that margin is still well within the error bars of any single season. Hopefully AA has some moves up his sleeve that will allow the Braves to pass the Mets.