तेषाममानितविमानितानियतयोरमानितं कृतार्थमानं युध्येत न विमानितमन्तःकोपम् ॥ कZ_०८.५.०२ ॥
teṣām amānitavimānitāniyatayor amānitaṃ kṛtārthamānaṃ yudhyeta na vimānitam antaḥkopam
Between one who has not been humiliated and one who has been humiliated (and is therefore unpredictable), he should fight the unhumiliated—one whose pride is satisfied and stable; he should not fight the humiliated one whose anger is inwardly inflamed.
Humiliation can produce reckless, high-variance behavior (last-stand aggression), reducing predictability and increasing your downside risk even if they are weaker.