Bro, mgt consulting is advisory for big4. With the exception of Deloitte and now PwC, they brand it as Advisory to void several legal issues following the Enron scandal.

And yes, all roles start off at the same pay with the same shitty hours and shitty hourly pay. Better to join big4 advisory as an experienced hire than to rise through the ranks. Looking at tier2 firms only, Big4 will always advertise if their manager/director/partner are ex-accenture, atk, OW and so on in proposals but Accenture, atk, OW will never advertise that they are ex-pwc/ey/kpmg, Deloitte probably if they were S&O