Truly the worst Mahabharata serial ever made. They showed Karna as the hero while Pandavas were shown in a very bad light. Even Bhishma and Drona have been shown badly. Seeing Drona, it feels that he is a very egoistic and cruel man.
In Veda Vyasa's Mahabharata, it is Karna who provokes Duryodhana's enmity with Pandavas. He is the one who asks Duryodhana not to be at peace with Pandavas.
Karna is shown to be equal to (and even better than) Arjuna. Though in reality he was defeated in Draupadi swayamvara, Virata yuddha and the Mahabharata war by the same Arjuna. Karna was also defeated by Gandharvas in the forest when the Kauravas were going to insult Pandavas In the Mahabharata war, he was also defeated by Abhimanyu and even by Bhima several times let alone Arjuna. Instead of watching this serial which is only misleading, my advice would be that we should read Veda Vyasa's Mahabharata