The major US media often got minor details wrong (especially details having to do with how the Italian legal system works)

Claiming that Guede implicated Sollecito and Knox as a part of a plea bargain and got his sentence cut down for that sounds quite major to me.

Likewise there's a major disagreement with regards to the interrogation where Knox implicated Lumumba (whom the police later cleared, by the way, the same bad police); Knox claims it was after many hours long interrogation and she was literally hit on the head by some policeperson, police says she did this right away and denies brutality.

How the fuck is it a clear cut question that an American girl got hit by Italian police, on basis of her words alone? There's nothing clear about allegations like this.