I don't think that helps me to understand the situationwhat is that even supposed to mean?Most CIWS systems can only depress so far, so surface-trajectory targets have a very short time to be fired on.
I can only speak of my own experience in computer games, but horizontal targets are always easier to hit than stuff that is flying in an up and down motion and not directly at you.
this is what it could've looked like for Inaho, I can't show the one from above properly because he wouldn't be facing it...
It's probably just as easy to hit and only slightly more difficult, however I don't believe it to be easier, you could argue that its more difficult by default because of how you'd have to set up your shooting position