How do you handle pressure when your in laws even your parents compare your family to your siblings family ?

I haven't experienced it yet but first of, there should not be any pressure or even comparison at all. If your parents truly loves you and understand each and every child's situation then when look down on one and be prouder to another? If it's going to be my in laws to do that then they'll probably hear this from me. As much as I hate comparison, I for sure won't create envy/jealousy in my own family. It's not healthy and most of all no one will benefit from doing so.