You stepped into a giant past discussion and didn't refer to it. If, for each point, you had either pointed to and refuted previous comments about those points, or else said, "And I read through the comments and found no reference to this point", you would have been picking up the conversation where it left off.

It seems to me that komponisto's The Amanda Knox Test similarly made a case for "not guilty" without reference to the all of the arguments for "guilty", and had other substantial flaws. But it's at 29, compared to Rolf's -10.

As someone who has no interest in the case (I haven't made any comment related to the case, nor read any of the discussions), judging from just the posts, I think Rolf's main mistake is that he forgot that one needs to be much more careful when arguing against a majority belief.