Speaking as a headhunter in the strat consulting space I would say don't get disheartened; MOW have not rejected YOU so much as you current level of experience, emotional intelligence, maturity etc AT THIS POINT; you just need some more experience (life in general, not just consulting). As for Tier 1 or Tier 2, MOW, Marakon, LEK, Roland Berger, OC & C etc are all excellent firms, and rated by their peers in MBB, so don't get tied up on this; of course you can reapply in the future - give it a year and have another go! These firms will work you hard so it's survival of the fittest - show them you are one of them!