I just don't understand that game. First of all, one base from Parting was odd but he probably expected a 1-1-1.
Then having 2 bases, 2 OCs and better mining from forGG and attacking with 5 rax marines and scvs that late in the game. I don't even understand. Scout that parting is on one base, and then make bunkers. Off one base, theres no way that Parting could have won without splash damage against all those marines.