So far, it's the only game that's got me interested in the xbone.
PS4 doesn't have a lot, itself, but I feel like MS is lagging behind in the exclusives so far.
To me, the only exclusive that really matters is Halo. Anything else Microsoft makes, has, or funds is just gravy.
If Microsoft's only exclusive franchise was Halo, I would still choose the Xbox over PlayStation, Wii, and whatever else 100 times out of 100.
That all said, the gravy is going to be good. Sunset just came out and is doing well going by reviews and word of mouth thus far. Quantam Break looks great. Gears of War should be awesome. Other games like Phantom Dust, Killer Instinct, Bloodborne, Forza, and Crackdown should get lots of attention going forward.
Lots of rumors about upcoming announcements too. A new Banjo Kazooie game from Rare has apparently been hinted about. Some stuff leaked about their "super secret" (actual quote) plans for e3 this year. They don't have a ton of fantastic exclusive stuff out now, and there isn't a whole lot announced to really interest some, for the most part the outlook is decent.
Granted, Sony and Nintendo probably have more coming down the pipeline as well so really nothing is concrete.