Fair point I guess I inadvertently paraphrased her. I still think the 3800X is just below the boost clock of the 3900X for marketing. Would be surprised if that turns out to not be the case. 'The 8 core device for the enthusiast gamer' is a very interesting turn of phrase too. IMO she's saying the 9900K and it's variants are going to be less good compared to the 3800X. I don't think the inter-core latency will be a feature problem for the 12c anyway having run a 1950X for a year and a half without any serious issues.
You aren't the only one - a lot of people seem to have missed the devil in the details! In all the videos I've seen, Lisa is very specific in her phrasing and knows what she's doing when speaking publicly.
There is still so much we don't know - as I mentioned earlier it's possible the 12 core can boost higher when unleashed from it's TDP due in part to lower thermal density with 6 cores per chiplet rather than 8. Perhaps it's hamstrung by overall TDP in comparison to the 3800X, but then how will that compare when using the enthusiast boards with seemingly endless gobs of VRM and custom cooling solutions that can remove all that extra heat?
How will the L3 cache be setup, and will the 12 core benefit from the larger amount in gaming, or will it suffer due to possible increased latency from the 2 chiplet design?
So many unknowns, especially with this completely new approach to chip design.
That is why I think it's an error to try and claim that one will be definitively better than the other at gaming until we actually see cold hard benchmarks. I suspect that it will vary depending upon the game being benched.
EDIT - as an aside I also posted an interesting video a while back from coreteks showing the use of AI to effectively make single threaded applications or games massively multithreaded. I'm sure over the next couple of years we will see a lot more about this, and potentially it might change the arithmetic on what effect more cores has on gaming... but that is all hypothetical and doesn't change the here and now of course.