If you look at Weghorst game, actually he doesn't really help much in attacks up front and looks stiff, maybe he hasn't adapted well. Therefore Ten Hag had to think about the position of the striker in the second half by replacing him. Man United is always under pressure because they play too much behind the goalkeeper so they don't pay attention to the fast movements made by Arsenal's attackers to win over the ball.
from the first minute to the 20th minute it was actually Manchester United who continued to dominate the match and carried out more attacks. But from the 20th minute until the end of the first half it is true that Arsenal increased the pace of their game. Arsenal became more aggressive after going one goal down and improved again when they managed to equalize the score. well, from the 20th minute to the end of the first half I agree that Arsenal are superior in this fight. But let's see what will happen in the second half. although I predict a win for Manchester United. But if it turns out that Arsenal are still showing high aggressiveness in the second half. then my prediction might be wrong.