I actually saw both - and I must admit, I enjoyed Batman v Superman and appreciated the intent and execution of LOGAN. Yet, I guess that the reaction to BvS already prompted a lighter approach for JUSTICE LEAGUE, and LOGAN is the end of that franchise. If you look at the other comic book heroes gearing up for new installments it´s all about having more fun and being more light-hearted as well.
And, quite frankly, after LOGAN I was asking myself: is this really what I am entertained by? Two hours of death, destruction, pain, anger, hopelessness? While the film is made very well, I don´t want to see it again.
But that´s exactly what drives the ongoing success of the Bond films. You want to see them again, have a good time watching them, feeling better afterwards.