It sounds like your talking about WISCIV, yes?
I agree that there is more to VCI than vocabulary. Volcabulary does hold an historical honored role as the single best indicator of general intelligence - but obviously this view is more narrow than my own.
WMI is also called on to access "ADHD" and distractibility - although I think there is some more complicated grouping of subtests called freedom of distractibility. Again, some feel gifted kids can ace these tests and still have significant trouble with distractibility. ((shrug))