Well, I am not sure Hickman managed anything so much as Marvel allowed it to happen. It is a bit more complicated as to what was influencing the decisions, it swung from just wanting to push the Avengers and let the rest of the line have some room to grow all the way to spite due to movie licenses.
But, as an example, in the height of the 'Marvel is screwing the X-Men' period, we have
https://www.comichron.com/monthlycom...2/2012-11.html the X-Men title topping the charts against all the other relaunches.