hmm, perhaps you meant
Code:
<encodingType type="string">vbrQuality</encodingType>
<quality type="uint">85</quality>
vbrQuality instead of vbrBitrate. Note that the <maxBitrate type="uint">99999999</maxBitrate> has an effect when vbrQuality is used, so if you want a very high quality, make sure to set maxBitrate high enough.
Also note that RV9's quality levels are very different from other codecs, so for instance RV9 at 85 is not the same as 85 for any other codec.
@BigPapaSmurf: hilsen til Norge fra Seattle! Those bitrate reductions are similar to what I have seen.