Just to be completely clear on the ruling that Hellmann delivered last night:
Article 530 of the Italian criminal code explicitly states that if the verdict is acquittal, the judicial panel can acquit either because of insufficient evidence, or because their conclusion is that the defendant(s) did not commit the crime(s), or because their conclusion is that the crimes themselves did not occur.
In this instance, Hellmann's judicial panel ruled very specifically that Knox and Sollecito were acquitted of the charges A (the murder itself, with sexual aggravation), B (the transportation of the kitchen knife), C (the sexual assault) and D (the theft) on the grounds that Knox and Sollecito did not commit these crimes. And it ruled that Knox/Sollecito were acquitted of charge E (the simulation of the break-in etc) because that crime was not committed by anyone, and did not therefore exist (that last one was a good spot by Rolfe last night - it was almost impossible to hear Hellmann make this part of the ruling in court due to the hullabaloo that broke out after the A, B, C, D acquittals were announced).
Therefore, nobody should be in any doubt whatsoever that in the view of Hellmann's court, this was categorically not a case of simple reasonable doubt. Rather, his court came to the conclusion that Knox and Sollecito had had nothing at all to do with the murder of Meredith Kercher. Hellmann's court is correct and justified in coming to that conclusion.