• adbhutam — amazing
  Vibhāva of adbhuta-rasa (wonder). The Bhāgavatam returns to adbhuta — the chapter's framing rasa, named again in verse 1 — to mark this as a līlā-moment, not a bare military datum.
• karma — feat
  Same word that names every Bhāgavata 'wonderful deed' of Bhagavān (cf. SB 10.14, karmāṇy adbhutāni). Pradyumna's karma is rated by the same yardstick because he is Kṛṣṇa's expansion.
• mahā-ātmanaḥ — of the great personality
  Contiguous join (mahā + ātmanaḥ). Mahātmā in Gītā 9.13 is the devotee under Kṛṣṇa's divine prakṛti. Pradyumna is mahātmā in the strict sense — a soul within Bhagavān's intimate retinue.
• pūjayām āsuḥ — honored
  Periphrastic perfect of √pūj. Pūjā is normally directed to the deity; here both armies pūjā the warrior. Gauḍīyas read this as a faint preview of the future when both 'sides' acknowledge Bhagavān.
• sva-para-sainikāḥ — the soldiers of His own side and of the enemy
  Contiguous join (sva + para + sainikāḥ). The Bhāgavatam compresses sva and para — own and other — into one phrase, and then dissolves the line by their shared awe. Rasa erases the dvandva for a moment.

Like a banquet at which even rival guests cannot help applauding the cook, the soldiers of both sides praise Pradyumna's feat — bhakti-prabhāva spills over the line dividing the armies. Even the asura's men have a moment of darśana.