Heavily advertised!!!!! Bionicle was barely advertised. Maybe it was heavily advertised during the first month, but not really. It appeared on three catalogs. Two on the front cover, but inside it was shoved to some corner. And yes, within lego own stores and own catalog/magazine, yes, but elsewhere, your were hard pressed to see an add much less find it in a store. And 2016, you rarely saw an add.
And as for nexo knights..... the hero's are boring and uninteresting. And while the sets look cool and creative, the villains don't seem that interesting.
Best part is that the line had more cheap sets that were good. Unlike ninjago when all the good sets were too expensive.
I haven't gotten any nexo knights sets so this is from what I can tell.