I feel like you are really picking apart hairs here.
There is not a huge difference between "the victim was not found to have been murdered." and "the jury did not find the evidence persuasive enough to decide guilt for the charged person for the charged crime". If you want to get really nitpicky, just because "the victim was not found to have been murdered", doesn't mean that they weren't murdered. Whether they were found to be murdered is a different statement than if they were actually murdered.
My reading of nsoam's comment is the implication that they are identical.
Remember, this is someone who never heard of Trayvon Martin, which suggests to me someone who doesn't know much about the US criminal court system. Which makes sense for someone who lives in Europe (https://news.ycombinator.com/item?id=50369146)[1].
While I remember that Nicole Brown Simpson and friend Ron Goldman were murdered, and are widely described as being murdered, even after O. J. Simpson was acquitted of that murder, so I have no surprise seeing Martin listed as a '“Murdered” person' even after Zimmerman's acquittal.
[1] And who, in the 5 days since starting the account, already made a disparaging comment about black people in Europe https://news.ycombinator.com/item?id=50377586 .