So are you saying that I was deluding myself when I successfully ran a USB-3 device on a USB-3 port using WinPE V2 ?
What that link fails to mention is that neither WinPE V2 nor VISTA, from which the WinPE 2 kernel is derived, supports USB-3 NATIVELY. However, if you load the correct drivers, you can support USB-3 not only on Vista, but even on XP.
Being a Symantec employee does not guarantee technical excellence or even technical competence, as they are just as good as their experience level dictates.
I accept if you have some hardware that is poorly supported by the vendor in terms of drivers, then it may prove to be impossible to get it working with your hardware combination, but that is not due to any fundamental limitation in the Ghost product or WinPE.