Conversely, the trustworthiness of information (i.e. analysis and commentary) is a function of the degree of bias of the source and not the data that informs it.
If the raw data is universally accessible then there should be no shortage of trustworthy information sources for the third audience you mention. Unbiased sources are ideal but that’s too much to hope for, so the next best thing for that audience is to consult a multitude of sources that are known to be examining the same data.
Finally, I do not think Wikileaks is ideal (I prefer something more like what Nate Silver does). But I take it as axiomatic that a free press — even one with an editorial voice — is a Good Thing. A journalistic organization that also releases its sources is a Better Thing and hence must also be a Good Thing.