Rogo-
Where are you getting your information? Some of it appears extremely suspect.
It seems from the latest info that the doom 3 beta build was leaked to nvidia for driver optimizations without a word to ati.
It wasn't 'leaked' to nVidia, id gave it to them. Last time id handed over a build of the game to ATi it ended up being available for download to the general public-
that is a leak.
Therefore the beta build was rendered on the nv35 using the dx 9 non-compliant nv30 path and not the agreed upon arb2 path.
???? Where are you reading this? First off, the game runs under OpenGL, not DirectX. The ARB2 path is non DX9 compliant. Second, who agreed to run the game under ARB2? Carmack has been saying that the NV30 should be run under the NV30 code path for several months now, why should he change his tune now? Should he state things that aren't true because ATi looks bad?
The nv35 also defaults to fp 16 while the 9800 runs it at a fp24 increasing even more the discrepency in this psuedo benchmark..
And oddly enough FP16 is what Carmack was stating he wanted for Doom3 a couple of years ago. Let's take a look at what JC has to say about the quality difference-
The Nvidia card will be fastest with "r_renderer nv30", while the ATI will be a tiny bit faster in the "r_renderer R200" mode instead of the "r_renderer ARB2" mode that it defaults to (which gives some minor quality improvements).
Moving from INT8 and a DX8 level feature set to FP24 and a DX9 level feature set(this in no way indicates compliant with DX9) results in some minor quality improvements. That is a quote from Carmack in Anand's review.
This doom 3 fiasco is meaninless. because.
If you believe that then you are delusional

The Doom3 benches did exactly what they were supposed to do for both id and nVidia. id had a huge round of press for their game leading in to E3 while nVidia got to show off its board looking extremely good in one of the biggest titles coming to the PC this year.
1.Doom 3 won't be out for 4-6 months
2.the 5900 can't be purchased.
I had to put these together. If you are buying a board right now looking to play Doom3 what do you think non rabid fanATIcs are going to buy?
4.The cat 3.2s were used (and these don't register the other 128mb of memory on the 9800), and neither do the cat 3.4s thereby validating the proposition that ati never had a chance to optimize its drivers while nvidia did.
The Cat3.4s recognize the RAM just fine. Look at {H}'s review and see how badly the R9800Pro gets throttled to hell and back when they use those drivers for the game. The reviewers were doing ATi a favor running the Cat3.2s instead of the 3.4s. As far as the validation in terms of optimizations, we saw the same thing in the alpha build running launch drivers from the FX 5800U looking at comparative performance. The drivers used are available to scrutinize for anyone who wants to, at least for nVidia. Can't say the same for ATi, although looking at the issues with the Cat3.4s I'm not sure they really should be either.
In the rest of the benchmarks I've looked at the 5900 does poorly when comparing AA. The AA performance at 8x on the nv35 and 6x on the 9800 is not comparable the radeons looks MUCH better and is about 60% faster.
Comparing SSAA to MSAA, could you point me to who does this with a straight face? 8x is there to enable SSAA in older titles who need AA for alpha textures, something ATi can't do right now. As far as looking MUCH better, try playing a game @1600x1200x4x AA on the R9800Pro and the R5900U and talk about the difference.
I would like to see the nv35 do well and so far it is a top performer with the 9800 pro BUT to use a beta as a benchmark is just asking for trouble especially if it can't be done apples to apples.
List off three apples to apples benches that have come out in the last six months.