You are not wrong at the staff in Dublin. The last 3 times going through there always seems to be a huge effort for them or they got very little training. The follow everything to the letter and there is no wiggle room. My carry on was 11kg and they wanted to put it in the hold because it was over the 10kg limit. I had to go to the manager and explain that I was just taking carry on with no hold luggage before I got away with it!!!! Rules are Rules but they just don't care. Compare this to staff in Frankfurt and they are world class.