Very very debatable. They're in the Europa league and starting luuk de jong and signing Adama traore. They're league is less competitive than England so they'll probably win a title before united but they have as long a journey back to winning a CL as united
This year has been to structure the economy and make it sustainable. Under normal circumstances and without the plague of injuries Barcelona should make top 4 without much trouble.
The important thing is to be competitive and regular in the league, the CL can be won by staying 20 points behind the champion in the league, there are many cases.
Right now it is much harder to win the English League than Spain, is very obvious.
In a few years we will have to see. Madrid with the signing of Mbappe and some other players, new stadium that will generate about 150-200M more a year can be a very difficult opponent.
And in the premier league, Guardiola and Klopp won't be much else. In addition, several important players are already having an age ( De Bruyne, Salah, Mane, VVD...
We will have to wait to see how all this evolves.
United decline isn't that bad, even if SAF stayed i doubt he would win many trophies in current PL, as the league has become more competitive than ever, and will be worse, especially with the new Saudi takeover of Newcastle.
United decline isn't solely because of bad decisions at the board, but also because the league is more competitive now.
In other times United would have still competed for the league, despite not looking great(they did in last SAF years) now their flaws are more notorious due to the competition.
United has been lowering the level for 9 years with the current one. Several years of not qualifying for champions and not fighting for the league.
This is the first year for Barcelona with such a low level, but the good thing is that they are taking action and acting with a firm hand. No renewal of Messi, lowering of salaries, selling players who have cost a lot of money... It will come out better or worse but they don't fall asleep in mediocrity. Also, having a clear game philosophy helps a lot. Bartomeu did not follow that philosophy and that is how the disaster began.