Unfortunately you're using poor logic in suggesting that because a) most of the Italian applications to the ECHR are thrown out for having no merit, this therefore b) automatically calls into question the merit of Knox's application.
I realise that you may have a particular agenda, but the objective process to pursue on this issue is NOT to draw illogical inferences from the raw ratio of applications to judgements of breach. Rather, the objective, rational, sceptical approach is to try to find ECHR applications with apparently similar features/dynamics to Knox's application, and see whether the court found them to have merit, ruled that there was a breach of the Convention and ordered restitution. This is what Numbers and others have been doing. It would of course be interesting to see whether seemingly similar cases had been dismissed by the ECHR, but of course that information is vastly more difficult (if not impossible) to find.
As of now, it seems that the ECHR has recently found in favour of the applicant in well over a dozen cases that bear reasonable comparison with Knox's application. And
that is the salient point to consider here.
As someone once said: "Lied, damn lies, and statistics"