I like Tarun more than his brother because Tarun, unlike his brother, is not good in studies or co-curricular activities. Tarun excels in running that isn't recognized by society as a talent. However, this does not deter Tarun from pursuing his dream.
After meeting Ram Narayan who offers to train Tarun, if he wins the race on Children's Day, Tarun diligently works to win it. On the race track too, despite slipping thrice, Tarun finishes the race. Tarun's determination to be a professional runner and to receive coaching from Ram Narayan keeps Tarun running on the track. It is because of Tarun's determination and diligence that I like Tarun more than his brother.