Pearls of Bhagavad Gita - Chapter 1.8

Bg 1.8

bhavān bhīṣmaś ca karṇaś ca
kṛpaś ca samitiṁ-jayaḥ
aśvatthāmā vikarṇaś ca
saumadattis tathaiva ca

Translation: 

There are personalities like you, Bhīṣma, Karṇa, Kṛpa, Aśvatthāmā, Vikarṇa and the son of Somadatta called Bhūriśravā, who are always victorious in battle.

Import:

1) Difference between Karna and Vibhishana

Ans) Both Vibhishana and Karna were in Dharma Sankata ( confusion as to in which side they would support during the war); however; after careful deep thinking and consideration, Vibhishana decided to leave his brother Ravana and go to Sri Rama; but Karna ; even though he knew Dharma was in the side of the Pandavas and victory was assured to them as Krishna was in their side; still 

because of his attachment with his friend Duryodhana; he remained in the side of Adharma at the cost of his own life.

2) Although Karna was equal to Arjuna in military and warfare skills; still he lost the war as he stood by the side of Adharma.