Hard to know what this G&T stuff means anyway.
Dd was not an unusually early talker, but once she did start she seemed to understand far more complex ideas than other children, we were having quite involved discussions about the past and the future when she was only just two. At that age, she was constantly challenging me: every statement of mine was met by "How do you know? Have you read it in a book? Have you read it in the papers?" She was not an abnormally badly behaved child, but she did not take things on trust: you had to argue your case.
She also seemed to have very good concentration skills and understand complex stories early: she sat through my reading of the LOTR trilogy aged 6 (though not in one sitting!) and then made some rather thoughtful observations about the plot structure.
Otoh she was very slow with anything involving motor skills; didn't sit until 8 months and only walked at 19 months.
Unsurprisingly, she is now doing very well at history and English, but has lots of physical problems.
I was the same: poor motor skills, but good language skills. And the same attitude of not believing something just because I was told.