This incarnation of broly is from a completely seperate timeline from the world of dragon ball,
He developed a more sane personality due to his relatively-less tragic background. Due to his upbringing on an inhospitable planet living only with his father and no other sentient being, Broly is a quiet fellow with little social skills or manners. His limited education has left him somewhat naïve to normal society, While his social skills aren't well-developed, Broly's intuition is quite acute.