Why would you expect the dash to be perfectly symmetrical?
If I was driving a 2 seater sports car (or any car for that matter) I would not be standing on the rear parcel shelf. I would be sitting in the drivers seat and so would expect the dashboard to be biased towards me as the driver.
Many cars see the dash curve around the driver to a point.
The only viewpoint that matters on a car like this is from the drivers seat. Nothing else matters.
the dash does not have to be symmetrical. Purely, mercedes dash seem to work best balanced, whilst, bmw and audi for example have a tilt to the driver and works best in that scenario.
Whilst mercedes does not position the dash towards the driver, if it was a flast dash, mis aligned it looks pretty poorly designed!