maybe the EP3 sounds better due to the FN2 having a bit more sound deadening in the cabin?
I didn't test drive the EP3 for that reason I imagine its a much better place to be when nailing it around the B roads which would make me enjoy it more but not so nice on the motorway.
But without driving it its all guess work
The EP3 is much better on a B road due to the rear suspension but pretty much the same on the motorway.
In the back of the FN2 or any Civic of the same shape is an absolute joke, it's solid.