I read those lists & they seem like a "throw everything and the kitchen sink" strategy to defend his behavior.
It shouldn't be much of a surprise that there is occasional criminal (& horrific) misconduct from soldiers or that the military collects statistics on civilian casualties. The idea that "war is hell" has been around for a long time.
(Who doesn't like idle speculation?) Manning seems like someone who had some emotional issues & was overwhelmed w/ what he saw & made a reckless decision to "turn over the playbook." Snowden's revelations are things that probably even the most intrepid journalist couldn't figure out, Manning's put folks' dots together for them
Overall, it seems like it will be very unfortunate circumstances & tough going for Manning and his family for the next several decades