My guess would be that the problem is that the DAA probably can't do a deal with FR because they'd be upsetting those wearing green!!
Nothing to do with deals as they are open to all carriers and daa don't do special treatment for carriers. As it is the majority of carriers at DUB are on discounts apart from Ryanair who don't use them and cut traffic.
FR and the daa did come close to a deal but FR rejected it.
In 2014 around 15 aircraft will be leaving the fleet with no new ones coming so aircraft will go where they can get good deals and of course millions in marketing support.
A decision on the B737 Max is due by end of September.