Except of course, that the Court expressly determined that in order to find that the territories are occupied and that the Fourth Geneva Convention applies there, there was no need to go into the precise prior status of the territories.
As the Court stated:
"The Court notes that, according to the first paragraph of Article 2 of the Fourth Geneva Convention, that Convention is applicable when two conditions are fulfilled: that there exists an armed conflict (whether or not a state of war has been recognized); and that the conflict has arisen between two contracting parties. If those two conditions are satisfied, the Convention applies, in particular, in any territory occupied in the course of the conflict by one of the contracting parties.
The object of the second paragraph of Article 2 is not to restrict the scope of application of the Convention, as defined by the first paragraph, by excluding therefrom territories not falling under the sovereignty of one of the contracting parties. It is directed simply to making it clear that, even if occupation effected during the conflict met no armed resistance, the Convention is still applicable.
This interpretation reflects the intention of the drafters of the Fourth Geneva Convention to protect civilians who find themselves, in whatever way, in the hands of the occupying Power. Whilst the drafters of the Hague Regulations of 1907 were as much concerned with protecting the rights of a State whose territory is occupied, as with protecting the inhabitants of that territory, the drafters of the Fourth Geneva Convention sought to guarantee the protection of civilians in time of war, regardless of the status of the occupied territories, as is shown by Article 47 of the Convention."
And then after several further paragraphs of discussion: " The Court accordingly finds that (the Fourth Geneva) Convention is applicable in the Palestinian territories which before the conflict lay to the east of the Green Line and which, during that conflict, were occupied by Israel, there being no need for any enquiry into the precise prior status of those territories."
But of course, I totally understand why you would try to muddy the waters. Presented with such a unanimous consensus, 15 judges from 15 different countries (including a British Jew and an American holocaust survivor), who among them issued all sorts of reservations about a whole host of minutiae in the Court's opinion, and yet not one of them issued a reservation regarding any of the points we are discussing (namely that the territory is occupied by Israel, that Geneva IV applies and that Israel is in violation of it), even the most ardent supporter of Israel would be hard pressed to deny it. You're giving them something, however flimsy, to grab on to for comfort. Which is nice.