An adversarial process is one where more than one party competes to influence or control it, using formal rules. Like a two party system or a civil court. These systems are very very common in the Western world. In Asia they are often seen as creating unnecessary competition and corruption. In the West, however, lack of competition is seen as leading to corruption. A good deal of the difference between these cultures may well be due to this only.
The Consumerium Governance Organization needs to employ it in some form. It is not clear whether it only supervises competitors to provide more accurate and fairly gathered data ("Western" model), or actually administers that data directly itself ("Asian" model). Probably some balance needs to be chosen.
See adversarial process (Wikipedia) for more on this.