You might be right on the high standards bit!
I have heard that 1st borns do tend to be more intellectual and are also most likely to be presidents or prime-ministers but that is because I think you tend to expect a lot more from your first child because you want to do everything right and you relax more with each subsequent child as you know that they will survive most things as with your first your experiencing everything for the first time with them and you yourself are unsure what to do so you are more strict with them and worry more than you do with your second or subsequent children.
It is hard to think that they (the children) will be so different when they come from the same parents.
Yes the second one is more practical she is certainly into pulling things a part. I don't remember my eldest doing that.
I was just wondering if others had or are having the same experience???? Seems to me they are