Judging a "judgement" call

[Rufus]

The only time I think about helping is if my partner asks for it and I have definitive knowledge/clear look.

If the coach asks you about a supposed botched call your partner made the response I use is "My partner had a good look and you can ask him next dead ball." I would try to avoid long discussions with them as it just gives them ammo to continue to complain. Definitely would not pass judgement on a partner's call (good or bad).