I don't understand the complaints about Seidou's difficulty in beating

But you want all games to win 8-0 .. for what? Not interested in seeing interesting and hard-fought matches?

Already compared to the summer tournament of the first act this tournament is much lower as regards the beauty of the matches - unfortunately that is unattainable - if then Tj makes Seidou easily win all the matches up to the semifinal .. what sense does it make? It would be boring.

In all sports manga there is the unbeatable rival team and the main team that has difficulties throughout the match. This is because we follow the main team and want to see matches fought.