No, as a rule I find it best not to get involved in this kind of situation if I do not know the person really well.
Unless the situation lends itself to a light hearted, well humored anecdote of a similar situation, that was effectively solved.
Then you need to have the confidence to tell it well. So that it almost appears not to apply to them at all.
Ok so nothing bad can really come of voicing your views. Except he may feel inadequate in front of his peers. The women involved may feel your simply trying to interfere in an attempt to garner his attention for yourself.

Good luck, I hope whatever you decide everything works out for the best.