UCD is, indeed 4As to get in and I know it's a random process but in a lot of ways I see it as a disadvantage to candidates. In fact, I think they should wise up their ideas about entrance requirements. I think the offers are so high because they have really high opinions of leaving certs (as they would, being an Irish Uni).
I'd just warn anyone trying to get in with A levels to think carefully about going there, mainly down to the entry requirements and the cost of living in Dublin. I'm Northern Irish myself and I went to Liverpool Uni for Veterinary. It takes me less time to get home from Liverpool than it would if I was in Dublin and it's a hell of a cheaper place to live! Also, the place is full of N. Irish/Irish people so you never get too lonely.