My cousin had a baby about 5 months before me and my aunt was always comparing the two babies and commenting on how advanced her grandson was in comparison - well yes, he is 5 months older!
Anyway, now that they are toddlers my DD is talking heaps and heaps more than he is, and my aunt is quite shocked I think!
I don't know why she is making such a big deal about it, kids do things at different stages and they all get there in the end!