Looking at 2019 M3P, the power bar has reduced noticeably by 150km/hr. Motor limited.
The new M3P seems to have no drop off at 90mph. So new motor seems more capable at high speed.
Approx peak power (ie top end) from what I can gather on older M3P comparisons:
LG 100% and preheated = Panasonic 50% room temperature
LG 50% = Panasonic 10%