Aronian vs Nakamura endgame debate

Most of you will be aware of the controversy surrounding the Aronian Nakamura game from round 6 of the Candidates. Nakamura touched his king, seemingly with the intent to move it, and then attempted to say ajust after touching the king. Nakamura was forced to move the king, and lost a very few moves after. I have no desire to go into a discussion about that however. I wish to go through the very interesting endgame. 

Aronian in the press conference claimed that the ending would've been winning even if Nakamura hadn't touched his king. Let's see if he is right.

Let me know your thoughts on this ending. Any variations I should've added? Errors? Let me know in your comments!