After reading your other posts, i think you are more annoyed that your friend does not seem to try your methods of disiplining her dd (or maybe she does but found they dont work for her dd) i think secretly you want to be able to say 'see i told you so' because you are so smug.
You do undermine your friend and i agree you have no empathy and little understanding, but at the end of the day, how she deals with her dd is none of your business, even if it is in your own home, you dont suddenly get to take over parenting of someone elses child just because they are in your house, if you dont like the way she deals with it, dont have them in your house, if you are worrying about your dd copying other childrens behaviour then you better lock her away for the next 10 yrs.
If you had come here and posted 'my friend is at the end of her tether, how can i help her control her dd tanturms' you would have got lots of advice, but no, it seems you already know how she should be parenting her, your just not happy becuase she doesnt listen to your preaching (and who can blame her, when your so smug)you havent said that your friend has even asked for your help or advice? maybe she feels she is coping with it in her own way.
But 'to expect my friends 2y 10mth old dd not to scream every time she doesn't get what she wants?' YABU. Your just pieed that you cant control your friend, like you do your dd.
Oh and my ds has his toys next to him in his highchair when he is eating, as long as he is eating i couldnt give a feck if he wants have 'bob the builder' dancing in his beans, they all go in the sink with the dishes when he has finished. Seriously, you sound like the 'hitler' of all mothers