Why does this whole business of flights to the US get people so worked up? As far as BRS is concerned it's an ATR72 on BRS-DUB up against a much cheaper option on a B737-800.
Since Aer Lingus pulled off GLA-DUB to allow Aer Arrann to fly the route, the fares have rocketed due to no economies of scale in comparison to the seat mile costs of the ATR. Also only the first and to a lesser extent the second rotations will be any use for connecting flights at DUB. Not sure what EI are offering that FR don't already do faster, cheaper and better on vastly superior aircraft. Think how little you see THAT in print!