I own a dual motor with the Boost and have driven quite a few Performance model 3's along with driving mine prior to boost for a stretch.
From what I have seen and also observed you can feel the power difference throughout the range compared to one without the Boost ; at least till 90 or so MPH.
Entering a highway for example the difference is major for the best real world example I can think of.
From 40+ a Boosted Dual Motor has similar acceleration as a M3P (2017 - 2023) I believe ; it is from 0 - 40 where the Performance remains faster by a good margin in my experience not looking at any actual data.
Certain there are some YouTube videos out there doing 1/4 mile and rolling race tests with and without boost and against a P model.
Not sure if Carwow has any but is worth a look, I know I saw them test a Y dual motor before and after the boost.
This is a fun online simulator that you can select 3 cars to "race" an AWD, an AWD + Accel Boost and a Performance AWD
Not sure exactly how accurate but gives you a rough idea of the differences
Based on the results it gives of such a race, subtracting out the 0-100 times from the 0-60 times gives:
5.57 for a regular AWD
4.85 for a Boosted AWD
4.84 for a Performance
So that would mean that the Boost is actually doing more of a difference between 60 - 100 than it does from 0 - 60 and the AWD boosted vs. Performance are nearly the same from 60 - 100