In most instances, this would be very good thinking.
Unfortunately, as with most things in life, things are a bit more
complicated.
If the OP follows your advice and goes here:
http://tinyurl.com/ycz4x5
then downloads the latest driver for the AIW 9600, he/she would find
they could not get 1680 X 1050 resolution, a native resolution for a
22" WS display. At least I couldn't with the RTM version of Vista, and
I jumped through a _bunch_ of hoops trying.
Now here's the interesting part, The previous ATI driver, 8.33.0.0,
dated 12/16/06, perfectly displays 1680 X 1050 on the exact same
system.
So the correct answer to the OP's question is:
Yes the AIW 9600 can support a WS monitor (at least a 22"), but only
with the previous driver.
Again, I _strongly_ agree with your above analogy but there are
exceptions to every cliche'. <g>