Interesting results - personally for me, as someone who wouldn't ordinarily ever consider going the AMD route..it may be an option if Intel don't pull their finger out and either drop the prices of the 9900k further, or release something new.
For gaming, we're now seeing near enough parity on the top end consumer intel and AMD chips (even in games which have an Intel bias), and the 9900k & 3900X are near enough identical price wise at £475 (intel) £480 (AMD). IF you need lots of threads them AMD continue to take the crown in many cases, but then 90% of us don't
I won't be upgrading until August/September now, so will be keeping an eye on the prices. Could be time for my first AMD chip in 20 years...