I am wondering at the "binder full of scenarios" for The One Ring, because I know of only one downloadable adventure.
@Dragon Age: This Game came out more or less the same time as WFRP3rd. In each of the two sets there is a scenario, in the quickstart guide there is one, in the GM screen pack another one and three adventures in the Blood in Ferelden anthology. That is a total of seven adventures.
For WFRP3rd we have 3 adventures in a single release, six scenarios in the core, ruinous powers and black fire pass boxes, and two short scenarios online. So FFG puts out even more adventures for WFRP3rd than GR for DA.
I don't think that's too bad.
And there ist the Liber Fanatica.