They aren't pan European champions yet they are always the Europe representative in the Leinster junior club championship. Why?
To qualify for Leinster, a team has to win the GGE 15 a side championship, which Amsterdam have won the last three years. Very few European sides have the numbers to put out a side that would be close to competitive in any county junior championship, maybe three or four at any point during the season and it depends on timing as clubs lose and gain different players throughout the year - Amsterdam, Barcelona, Madrid, Valencia. Maybe occasionally Warsaw.
Pan euros are 11 a side and invitational. Nantes were runners up this year. At the 15 a side championship in September they lost in the group stage to us (Barcelona) and we put out a complete second team.