I think that they both especially Anett had a bit of an iffy mental day but the biggest difference between the 2 of them was Consistency and Serving. I am not sure if these stats are acurate for either player but Belinda's ratio was far better and she hit the same amount of Aces but with 8 less Double Faults. Still, she has been so solid and that really is something. High percentages of 1st Serves coupled with high 1st Serve win rates say a lot about how she played and both contributed massively to her victory.
I still stand by my view that Anett is better but I think Belinda continues to grow on me. She either managed to compose herself amazingly or preyed on Anett's concentration lapses, both something which take great experience and intelligence and I think out of any of the tennis players going around aside from maybe Konjuh, this is a player who has the game the attitude and most most most importantly the mental strength and stability to win big matches and move her game forward.