Who is responsible for the win ?

 It was the time when Mahabharata war got over.

Pandavas along with Sri Krishna were sitting chatting. 

That time, Sri Krishna wanted to know who is responsible for the win in the war?

Yudhishtira said it is because of his goodness and his nature of not doing any partiality is the main reason.

Bhima said it is because of his muscle strength they have won the war.

Arjuna said they have won the war because of his archery skills.

Nakula and Sahadeva said it is because of Sri Krishna 's support that they have won the war.

After listening to Pandavas, Sri Krishna said, 

"it is because of Karna. His nature of giving alms without worrying about the consequences helped us.

Even though knowing that giving his kavacha and Karna kundala as alms to unknown people will result in his death, he didn't take the step backwards. 

Otherwise he would be invincible.... 

He didn't care about his safety. That's why he is always hailed as daanashoora Karna.