Competition in the Premier League and La Liga is clearly very much different. In the Premier League there are many quality clubs and the atmosphere of competition exceeds that of other leagues and is the world's spotlight football league. Whereas La Liga might only be a few clubs and Barcelona's position would be very easy even though Real Madrid is there.
In fact, currently neither Barcelona nor Man United has a specific standard of who will win. Both can play with a draw. Xavi's plus point is the stable balance of players and consistency this season. As for Erik Ten Hag, he still often has problems, such as in the match against Leeds his players were mentally shaken and what worries him the most are the players who are now not in the full main squad.
Well, this is very different, even in my opinion, don't compare it to the Domestic League just because of how many goals a team concedes to judge badly, but basically, they have good potential in every game, but when they meet in the Europa League then anything can it happens that the strength of the two will be strong against each other to maintain victory in this tournament.
Indeed, on the other hand, we see more problems with Manchester United than Barcelona, which tends to be more stable in LaLiga, but when they meet later this month, we expect something more interesting, of course, from a coach's point of view, between Xavi and Erik Ten Hag who will provide their best strategy so far, so I think they'll be even for now.