Are you comparing exactly the same scene? There are bound to be some differences, because from A4 released 1.5 years ago, a lot have changed. I have tried to keep the shading similar, but some changes did happen. If you just take a scene fine-tuned for A4, it will not look as good in A7, but you should be able to achieve the same look if you made the scene from scratch in A7.
BTW: The scene in benchmark is not the same as .max, the .max has all settings reset to demonstrate that you dont need to change anything, so there is different color mapping