I thought my younger one was "slow"
I will say that the perception that the younger one is 'behind' in some way is very very common among families where the first child is unusually gifted. My impression is that a good 50% of these younger children outscore their older sibs on IQ tests.
As an oldest sister and Mom of an only, here's how the sibling thing looks to me:
It seems easier for a later-born giftie to look more 'normal' and be less needy. Personally I think that a younger sib gets to be around more people who 'get them' right off the bat, because they have first born to interact with in addition to mom. I think it is a great benefit to a child to be born into a family that has a child in it, so the child can relax and accept the condition of childhood as more of a given.
Many of our first borns have a decidedly 'tick-like' approach to their mommas, which most 2nd borns either skip or have a less severe case. My SIL called my niece 'The Tick' for about 3 years.
Smiles,
Grinity
