What interesting there is if you look only at results from radar cars it's pretty close to even....while for vision only cars it's OVERWHELMINGLY bad.
I've mentioned before some concern about their getting vision-only to parity with radar+vision going slowly and this seems to reinforce that concern.
FWIW as someone with a radar car, who is now theoretically on vision only as part of FSDBeta, I still haven't noticed any real problematic "phantom" braking at all on NoA/Highway driving.
There's certainly lots of braking in city streets.... though it's way better in recent versions than when I first got it... Now it's more like reasonably often 1-3 mph slowdowns, pretty reliably if you crest a hill or come around a corner or anything else where visibility isn't ideal ahead.... whereas before it was a much harder slowdown.
There is definitely something wrong with pure vision.
Where I noticed the most degradation is in the rain. Even TACC will say "reducing speed due to weather", and Vision+Radar never did that. In fact the degradation is so pronounced that I really haven't had the opportunity to test out NoA with the FSD Beta build.
Can't really test NoA when it tells me the camera is too blinded to do an auto-lane change.
Hopefully I get a chance to test it more this week as the weather gods are giving us PNW folks a tiny break from the rain.