Mahabharat Unsaid Facts | Who was the Best Archer Karna or Arjun | Was Bhishma Pitamah Biased

Facts about Mahabharat which is rarely known by the mass, Is the TV Visuals seen of Mahabharat series correct,
Was Bhisma Pitahma really Biased, Was Hanuman ji really Present on Arjun's Chariot, Did Krishna really save Arjun from Karn