No doubt,Euro 2020 competition was more intensive and severe than the cops America because the way big teams were knocked out of the competition is something no one expected.Seeing Italy win the tournament is something that look like a shock to many people because we have teams like Germany,Belgium being knocked out of the tournament by the teams we never expected.Unarguably,all the teams that qualified for the tournament were ready and fully prepared to go far in the tournament,which added more intensity and cohesion as you said to the game.
A lot of upsets happened this time with the Euro championship. Before the tournament started, England, Germany and France were the favorites if we do by the betting odds (Italy was not among the top 3). And out of these three, only England managed to reach the quarter finals. Germany was unfortunate, since their PQF match was against England. Well.. it may be wrong to compare Euro with Copa America. The European and Latin American teams have different playing style and both have their own advantages and disadvantages.
This season I would like to say that the fate of France is the worst. The 11 players on their team all played great. They were a very stable team. Yet they fail to perform well only due to lack of coordination of players. On the other hand, Italy has formed a stable team. The bonding of the players with each other is very good.
Copa America teams like dribbling very much, they hold the ball more. On the other hand, Euro's teams play attacking football. We see a lot of attacks in their matches.