Originally Posted by dusty
... if PG were to be replaced with ASD.
Agreed, obfuscating identification would not serve children well. This article from the Davidson Database may be of interest to this discussion thread. Note that being written in 2000, it predates the DSM-5, whose changes from DSM-IV include placing Asperger's Syndrome (AS) into the umbrella of "Austism Spectrum Disorder (ASD)", therefore the article utilizes the old terminology "Asperger's" and "AS".

Originally Posted by article
Similarities Between Asperger Children and Gifted Children
There seem to be at least seven characteristics common to gifted children and to children with AS. These commonalities have not been verified in any controlled studies, but are pulled from the shared literature and clinical experience. For instance, verbal fluency or precocity is common to both, and both may have excellent memories (Clark, 1992; Frith, 1991; Levy, 1988; Silverman, 1993). Both may evidence a fascination with letters or numbers and enjoy memorizing factual information at an early age. Both may demonstrate an absorbing interest in a specialized topic and may acquire vast amounts of factual information about it (Clark; Gallagher, 1985; Klin & Volkmar, 1995). They may annoy peers with their limitless talk about their interests. They may ask endless questions or give such lengthy and elaborately specific responses to questions that it seems they are unable to stop.
...
Hypersensitivity to sensory stimuli is also not uncommon in both groups of children. Parents of gifted and AS children alike often can tell stories of their child's adamant refusal to wear certain kinds of materials, to eat foods of a certain texture, to recoil or run at the sound of noises they find particularly abrasive, or to refuse some kinds of touch.

AS children are described as having quite a range of abilities, as are gifted children. It was Asperger's observation that all children with the disorder seem to have "a special interest which enables them to achieve quite extraordinary levels of performance in a certain area" (p. 45). This interest is similar to the way in which gifted children are said to have "passions" (Betts & Kercher, 1999; Torrance, 1965). While they may demonstrate extraordinary skill in selected areas, both AS children and gifted children may perform in the average range in other areas (Baum, Owen, & Dixon, 1991; Wing, 1991). Both the gifted and the AS child are described as experiencing uneven development, particularly when cognitive development is compared to social and affective development at a young age (Altman, 1983; Asperger, 1991; Hollingworth, 1942; Silverman, 1993).
This article goes on to provide much more detail, especially on the distinctions between gifted and ASD. As the article describes common traits in general it may not match a particular child exactly, whether that child is gifted, has Autism Spectrum Disorder, or both.

Having an understanding of similarities, and differences, of the common traits among gifted children, and those with ASD, may help parents appreciate the value of testing their child to obtain the most accurate identification so that appropriate support and/or remediation may be provided early on.