I've seen some include strategy groups of the big 4, such as Parthenon and Strategy&, under Tier 2 while others say they're still big 4. I don't understand why these strategy groups wouldn't be included in tier 2 as they were once independent strategy firms before they were acquired. Are other tier 2 firms, such as Oliver Wymann or LEK, better than Parthernon or Strategy& in the U.S.? I'm specifically interested in going into brand management or focusing on marketing.
Based on my interests, will joining MBB, instead of the aformentioned firms, provide me with more opporutnities? I've read MBB is best if you want to go into PE, which I'm not interested in.