The Raid battle result depends on multiple factors; such as team power, the composition of both teams and arrangement of the board (which is random). Because of these factors, it is possible to occasionally beat (or be beaten by) a team with a power difference of more than a hundred points.

Please note, the team you see before you begin a Raid and through your Watchtower Raid Log is your opponent's Defense Team, not the team used to attack you. You do not see the team your opponent used to attack, which can be completely different than the Defense Team.