Well, the difference is how the input is approached.
Over at BN or at Fragr, well-meaning members put into a topic "Submit Missing Fragrances" a string of either a photo, a short description, a few, sometimes incomplete data.
That input gets transformed into solid data for the website databank by only a few dedicated members behind the curtains.
Here, a simple straightforward Form was developed, the entire membership was invited to "work", and that work was made easy. The Form marshals all the data.
So, the "work" is spread over many shoulders. Knowledgeable verifiers and evaluators make the input solid and dependable.
In addition, the Perfume Page is like a "shingle" to advertise. A new perfume is put in. Reviews follow. On the righthand side is showing how many members have it. And more ...
Once the outside viewer has seen the Perfume Page, it is not too far to go over to Forum discussions or read the intelligent Blog-Articles, especially those on the updating Blog-Roll.