I have a friend with the exact same thing. The younger is more athletic, taller, and bigger. The older is smaller, and not quite as rough and tumble. She tries to keep them in different sports. Younger played flag football this year, but older played baseball. That way they aren't being compared on the same sport (besides, older probably wouldn't like football!) I don't know what she says to people that say it in front of the kids, but my guess it would be something simple and to the point like "yes, isn't it amazing how God makes all of us different for different reasons" and leave it at that. I would hope people would get the point, especially in front of the boys, that it is a sore subject. You don't have to explain to every Tom, Dick and Harry that your oldest was a preemie. As for making the boys make a deal out of it...I guess you just have to try to talk to them about it. If it comes up, talk to them individually. Explain that God makes everyone different for different reasons. There is a reason people look different and are different heights and have different abilities. If no one was short, would we have Jockey's? If no one was tall, would basketball be as fun to watch? Etc. And just let the lines of communication be open. Explain to the older one that his younger brother can't help what size he is any more than he can, and vice versa. Maybe that will put it in prospective for the older child. You might also explain that people grow at different rates and even though they are close in size now, most boys have a growth spurt at around age 14-16 and who knows who will end up taller. Also, I think most boys average out in high school, although that is a long time away from now! Hang in there