Copeland was excellent, he was also named the best player of the tournament. He is great athlete, there aren't many players with such a combination of height, power and speed. He needs space to shine though and his control of the ball behind the scrum is pretty bad. But he's a very skilled player and a major attacking threat, he will surely get into the first Irish squad as a substitute at least.
In my opinion (but I watched every match from the stands so I might confuse some numbers), the other standouts in the Irish team were Craig Gilroy and Andrew Conway. Not impressed with the props though, they had some trouble against Uruguay and were bested by a young 3rd/4th choice Romanian front row.
From the other teams, I thought Romania's young props Badiu, Tarus and Pristavita did great and Uruguay fullback Gaston Mieres is a great attacking player.