When you use Blender to apply rotation as well as Unity3d: If you do it using the transform properties doesn't matter if you are on Global space or Local space, you get the same result.
But in Blender you're allowed to apply rotations specifying for each axis the Global or Local space, so you can get what you want (not in the transform properties box, but with hotkeys).
How do you get this on Unity3d?
(In fact in Blender you can do this with more than one object selected)
Thank you in advance.
And the winner is..... Irwiss with this amazing tip
Irwess said at IRC:
The local/global switch only affects the gizmos in scene view, inspector will local transform values, since doing global would make it lose precision.