It's both. Your joystick is also a analog device (albeit with discrete
inputs), and both the 'stick and the wheel are capable of very fine adjustments
in steering. It's just easier with the wheel. You also feel more like you're
driving when you use a wheel than when you use a 'stick.
If you know the course, lap times improve quite a bit. I can turn a 239mph
lap at Michigan on the 2nd lap with a wheel every time I try. (And now that
I'm racing with a different engine, I bet I can do better than that. This
is with the old Ilmor motor.) [IndyCar, not NASCAR!] If I try that on a
stick, I'm probably only going to get to 236 or 236.5 for a few laps, and
I probably will have some trouble keeping it there. In the racing context,
those 2.5mph are a drastic improvement. (Ie, in IICC, 239 is good for a
couple of points; 236.9 is a fat zero.) Some of the best sim drivers I know
use joysticks, and one even used a keyboard until recently.
On the other hand, when I got my wheel, I improved from about 1:35 to
about 1:32 at Laguna Seca (a competitive lap is 1:06, a top one is 1:03).
I paid $115 for a Thrustmaster T1, which has a wheel, shift lever and pedals.
See other postings for my comments.
Incidently, the above applies to IndyCar, and I am told that it's about
the same with F1GP/WC. It does *NOT* apply to NASCAR; IMHO you cannot
drive NASCAR with a 'stick unless you're REAL DAMN GOOD.
--
Brian Wong Product Marketing Engineering