I picture them (Rousselon in particular) as direct competitors to Wusthof and Zwilling...
Let me put it this way: I bought a budget (Asian) Sabatier kit to a friend who prepares great food with lousy knives. And told her that I will replace them with good ones one by one if she keeps the kit in order and the edges are sharp whenever I visit. If she can`t keep them, what`s the point with great knives... I deliberately picked Sabatier both because she could have the full kit, and to ensure she gets used to a standard (sort of) for handling/balance and so on. They are bad enough for her to feel the difference when she gets decent ones.