Seems the MAN-USA market is well down this winter, but, with several Euro cuts, at least its not indicative the just the MAN market, and at least its only Jan-Mar. DUB looses all AA service (not including US to PHL) for the whole winter with JFK being cut too.
Looking as an "outsider" it seams to me that certainly for winter, MAN has reached it's level as regards capacity to major US hubs (not pure leisure destinations) and capacity may be being trimmed down to more economic levels which the carriers hope will raise yields.
The shear amount of capacity eastwards via the gulf may also result somewhere down the line in some retrenchment, although as the requirement for the ME3 to make profits (given their ownerships) is probably less than for US carriers.
Either way, the apparent weakness doesn't bode so well for other airports aspiring for additional / new links to the US of A.