Retreating inland after amphibious assault

[Jimmer]

OK, I lose. But, I want to ask one more thing: Shouldn't the defender be the one who chose which "side" of the area his force was stationed on before combat? So, it would seem to me that the defender should be allowed the retreat location to which the losing attacker is sent (whether in an amphibious assault or the strikeback).
 
On the other hand, the same mentality applies to non-water battles almost as well.
 
What do you guys think?