Look at 3:52 of this video (see below), it is comparing the predecessor of P100D (p85d) vs the predecessor of Demon (Hellcat). There are also other channel like Dragtimes using Vbox equipment that show P100D max g is now at 1.3 something g, very similar profile compare to what you see in this video. Notice that almost all EV with g level peaking in the first 2 seconds, while gas car peak g is usually later due to traction and non-instant torque. Yes, you could argue that this Consumer Report test wasn't done on drag strip.
But if comparing P100D vs Demon, the "jolt" within the first 2 second after launch is definitely harder with the P100D. We all know that EV is quicker in the fast half of the quarter mile, while the 2nd half of the quarter mile is slower. ICE cars is the other way around. And we all know that peak g level all happens during the first half of the 1/4 mile (usually within the first 2 seconds after launch). So it just make common sense to me that P100D would win on g level.
I think when we find figures in regard to 0-30 mph time between the two cars, then we know for sure which one has higher g. It is not that hard, whichever has a faster 0-30 mph time means also having higher g. 0-60 mph is also another important data point, we all know that P100D is 2.28 second and Demon is 2.3 second. The results so far already tilt toward Tesla favor.