Boxical, what you are saying is absolute right.
If nvidia gets a stable running nv30 out by the end of December (all information available is confirming this) then nvidia will have the big lead for quite some time.
Of course ATI is also releasing a 9700 supporting DDR II, but this one won't be available before May/June. So concerning DDR II, nvidia will have a lead for 5-6 months.
The 0.13 micron issue is even more worse for ATI since they won't be able to release a r300 or r350 core based on a 0.13 micron manufacturing process before Q4 2003 at the earliest because they will have major problems when doing this dieshrink (the same nvidia also had and probably even others).
So, nvidia will be again ahead on the 3d market for maybe a whole year if not more, since they are already preparing a 0.09 micron die for their next graphiccard after the nv30...
Information about when ATI releases their DDR II chip can be found here:
http://www.eet.com/semi/news/OEG20021024S0043
On a sidenote:
History repeats itself. The process happening here currently with nvidia and ATI already started with Intel and AMD 2-3 years ago. At that time AMD released the Athlon XP based on the stable K6 core which of course did perform very well since the K6 technology was available for several years and had already been fine tuned. Intel on the other side had major problems breaking the 1GHz barrier with their PIII and their new generation P4 core didn't work and perform like Intel hoped it in the beginning. So AMD was very successfull because the competition had nothing to offer during that weak phase. Over the years the P4 has now been optimized and enhanced and therefore is performing like Intel always hoped it would do, beating again AMD since they concentrated themselves so much on their now dated Athlon XPs based on the K6 core which no longer are scalable. Adding to that, Intel has a nearly ready P4 based on 0.09 micron and is already designing a CPU based on 0.064 micron! AMD still has troubles getting their 0.13 dies working cool, fast and stable...
Back to ATI and nvidia: ATI shameless made use out of a situation where nvidia had nothing to offer because their were concentrating on a cutting-edge technology. So ATI released their r300 which beats the GF4 but unfortunately the 9700 is not ready to keep up with the technology nvidia will release in a two months time (nv30 showcase already in 3 weeks!). ATI now has the performance lead over any competitor but will again be second by the end of this year. As with AMD, it will take ATI much time (at least 9 months) to release a dieshrink of their r300. Of course many ATI fans will now be shouting out loud that the nv30 can't beat their 9700 but this behaving is normal when the underdog gets a product out which can temporarly beat the competition. Just wait for the nv30 release and it will be again all calm here in these forums
Have a nice day!
PS: I'm solely talking about performance and technology advantages, not pricing advantages which the r300 will surely have over the nv30!