What was the purpose of the Rabbids collab?

[Mystro-Sama]

Alby_da_Wolf said:
Minions > Rabbids
but
Rabbids >>> Waluigi, Tingle, Diddy Kong, Ash Ketchum and some Pokémons
so
it's surely a wonderful deal for Ubisoft, but a more than decent one for Ninty too.

I can't see minions in a proper game that isn't a movie tie in or has a shit budget.