This subject never ceases to amaze me. Whilst one parent can without batting an eyelid, gush til their heart's content about their child's abilities, another will (like me) be super cautious for fear of bragging ..... and then how knowledge of another kids abilities can be received, from genuine interest and encouragement, to out and out resentment.
The tricky thing I've often found is that by not 'telling the full story' I think I sometimes confuse matters more. I envy those of you who have no problem saying it just how it is.