They definitely can. Brooks is starting to finally fulfill his potential with the great Benji Marshall beside him. Their starting props are beasts, Matulino always needed a change of scenery to get back to his best and Packer's been awesome for a while now. They've got a decent backrow and a capable bench.
I'm not sure if they have enough firepower out wide at this stage though, but if Marsters, Thompson n co keep improving anything's possible. Lolohea could be a bit of an X-Factor player for them when he returns too.