Immortals biggest advantages usually come from the top lane synergy between Huni and Reignover. Huni can then translate the leads he is given to the other lanes across the map. If Dardoch can outplay Reignover (which I think he can, although it is not a given), he can get the game snowballing in his direction and begin to tip the scales. One benefit that Liquid has is that Piglet plays a lot safer than Turtle. If Liquid can punish that aggressiveness, they can potentially instagib Turtle and just face roll the rest of the team fight.
I expect to see Nidalee highly contested. Both Dardoch and Reignover played Nidalee yesterday to great success. Wouldn't be surprised to see it first picked or banned.
All in all, I'm pulling my Liquid boys. I think they can do it but they have to bring it.