Which is faster?

The Porsche 997.2 GT3 Cup is faster — 1.9s quicker on average across 3 shared tracks.

Specifications

Specifications	BMW M4 GT4 M4 GT4	Porsche 997.2 GT3 Cup 997.2 GT3 Cup
Model Years	2018-2021	2010-2012
horsepower	437	450
torque (N_M)	550	430
weight (KG)	1,430	1,200
Power to Weight	0.31	0.37
Rank	#26	-
Tire	1 P ZERO RACING SLICKS 300/660/18	1 P ZERO RACING SLICKS 27/68/18 / 31/71/18
engine Description	3.0-liter S55 inline 6-cylinder engine	3.6 L Watercooled Flat 6
gearbox	7-SPEED DUAL CLUTCH TRANSMISSION	6-SPEED
drive Type	RWD	RWD
width (MM)	1880	1852
length (MM)	4686	4494
height (MM)	1382	1497
0 - 60 MPH	3.8 SECs	3.5 SECs
top Speed (KPH)	306	298
Current Value	$ 185,000	$ 141,551
RACE	Yes	Yes
OVERALL VS AVERAGE LAP TIMES	-9.1s	-9.32s