actually, the main reason to me it looks like is failure to communicate with team... also take in account the fact that you had 5 games you were reported for in that 1 case. 5 games usually indicates you were reported much more often. I keep telling people, communication, even if it is in defense of your poor playing, will give you a much better shot at being pardoned. If you just remain silent but constantly die to the enemy team, it looks like you are feeding. Too many angry children want to ignore the 1st part of that report subject, which is INTENTIONAL!!!! also since it expressly states reporting someone for being unskilled will not result in any negative action against them. Ragers and immature people don't want that, they want to see you punished, so they report for feeding instead of unskilled.
Last game I had 2 trolls on my team in TT. 1 refused to say a single word in chat and started out afk for the 1st 2 minutes. The other started flipping out on me after I died for my 2nd time, in our 2nd team fight, within the 1st 10 minutes. He said if i don't stop i was getting reported for feeding, to which I said "do you even know what the word intentional is?", and if he was going to continue his attitude with threats of a false report, I would have to mute him and report him for negative behavior. He didn't stop... As a matter of fact he immediately responded saying he would revenge report me. After the game I noticed him and his silent friend were hanging out a lot longer then normal, so I fully expect them to of reported me. However if my case ends up in the tribunal, I have faith in the fact people read the chats, and will see what he said about his revenge reporting me, if i reported him for his behavior... That is more then enough IMHO for anyone to be pardoned, just so long as they aren't raging, flaming or cursing. In the end, you will see the rager in there for negative attitude, his friend for refusal to communicate, and me for intentional feeding, even tho i went 5/5/10 with 213cs. So if you saw those 3 reports, who do you think is getting punished?!!! I still have my faith in the system