There are a number of questions there.
As you rightly noted, the FSC certification, in our understanding, is from the Resolute transaction that 100% of the lands held by Paper Excellence would be third party certified. It's likely noted on the website, as you mentioned. The benefits of this are many.
However, it does indicate, internationally, that these companies are operating in a sustainable way and held to a high standard. They are being third party audited by the certification bodies to ensure they are doing so. This gives the buyers and customers of these companies confidence that they are buying sustainably harvested wood and paper products from sustainably managed forests.