For better would it be to eat beggary in this world without killing teachers of great soul. Killing these gurus, desirous of pleasures, I would enjoy in this life of goods soaked in blood

Arjuna presents the dilemma in terms of śreyas (supreme good, what is best in the long term). Bhaikṣyam (beggary, life of bhikṣu) is preferable to parricide. The teachers are mahānubhāvān (of great presence/spirit), not mere soldiers.

The second hemistich reveals his true fear: not just killing, but bhuñjīya (would enjoy, would eat) bhogān (pleasures, enjoyments) rudhira-pradigdhān (sprinkled with blood). Victory would be moral cannibalism — consuming goods stained by teachers’ blood.

Artha-kāmān (desirous of wealth/pleasures) is the characterization Arjuna accepts of the enemy. But if they are thus, how to justify their death? The tension persists.