Tanus was very different from Eater in many ways. Tanus was more like what one would find traveling through Zocarro, but with a similar level of power to the surface of Eater. But this new planet the group was passing through lost out in overall strength and spiritual richness compared to Eater. The difference was not great, however.
As soon as they reached the surface of Tanus, a planet twice the size of Eater, the group moved on with their investigation. They knew minimal information about the area, so they weren't totally in the dark, but they had little to go on either.
Their initial job was to follow the clues they got from their exchanges with the 'Beast King's' former underlings, which should lead them to the remaining family of that legendary figure.