कृष्ण की पुकार हैं ये भागवत का सार हैं
की युद्ध ही तो वीर का प्रमाण हैं
कौरवों की भीड़ हो या पांडवों का नीड़ हो
जो लड़ सका हैं वो ही तो महान हैं
This line beautifully espouses the arguments put forth by Krishna while persuading Arjun to fight. All the arguments of Arjun regarding Wise men (pandit) considering victory and defeat as same thus making the war illogical are negated by these arguments of Krishna.
If Krishna had espoused this message to Duryodhan, perhaps, this is how he would have taken it. Matter of perspective. The Duryodhan's tamasic perspective are seen in final couplet of this poem-
जीत की हवस नहीं, किसीपे कोई वश नहीं
क्या ज़िन्दगी हैं ठोकरों पे मार दो..
मौत अंत हैं नहीं तो मौत से भी क्यों डरें
ये जाके आसमान में दहाड़ दो
Krishna wanted Arjun to invoke his tamasic side and indulge in gory war, instead of being in profound self doubt and waste the opportunity of establishing the reign of Dharma (righteousness) on earth. Arjun was sulking over probable death of the bodies of his cousins and teachers even before the war started. It was as if, he gave up before he even started, assuming that he will win the war.
The dream that he saw of establishing the rightful empire of Pandavas was beautiful as long as it was dream. When time came to convert that dream into reality, profound self-doubt clouded the wisdom of this mighty warrior. He took his own victory over numerically and technologically superior foe, for granted. And procastrinated the grief he will experience in future when he kills his kin.