Your Layout 2 is setted to be the first in the order of your project.
So the "Crater" instance in the layout 2 is considered to be the first instance, from which the properties are used when creating a new instance.
There's nothing preventing you from including another event sheet in your main event sheet according to the orientation, and giving the correct size for the instances accordingly.
Example capx
I'm not sure about a landscape/portrait versions, it seemed to me that this was automatically handled by the wrappers.
At worst, lock the game so that it is used either in portrait or in landscape.