The adventurer in need doesn’t reflect actual queue times because the system is designed to check tanks first

Say in the last 10 minutes
-50 tanks
-20 healers
-300 DPS

Have queued for the expert roulette, the system has a set amount based on queues that it will use to determine what constitutes being adventurer in need, say it decides that if there is less than 60 of a role that role is adventurer in need, it will check tanks first, see there less than 60 tanks and list that as adventurer in need despite there being less healers overall whos queues end up popping faster

It’s also why at 3am server time when all the queues are dead the queues all basically default to tank being adventurer in need; because there isn’t enough people for any of the roles but tank is checked first

About the only thing you can use adventurer in need to determine is if there is DPS in need for any roulette other than the alliance roulette then there is a current shortage of DPS at that singular time point, adventurer in need is useless at comparing tanks to healers