Hm, i dont understand how you mean it. They dont affect each other. But ya, as you said the queues for wolfs den are even more horrible as frontline queues and so on you should wait with the wolfs den challenge logs until you are near rank 30 and you should be sure to win 3 out of 4 games. That can be done by playing a healer with tank accessories. Because then you always have a good healer in your group because you are playing it by yourself wich leads to an higher win chance.