I personally wouldn't trust this. Imo this is an easier year and they still would want to distinguish between a lot more, so I'm expecting harsher marking. Also from experience there are so many small details that people tend to miss in proofs, (for example, the amount of times I have seen people fail the $\sqrt{2}$ is irrational proof because when they assume $\sqrt{2} = \frac{a}{b}$ for integers $a,b \in \mathbb{Z}$, they forget to state that $b$ is non-zero) and it's just things you don't think about.