My opinion is that they are basically equal. GTO has more power but is heavier.

Usual time for a stock SRT6:

1/4 Mile ET: 13.200
1/4 Mile MPH: 108.120
1/8 Mile ET: 8.669
1/8 Mile MPH: 87.140
0-60 Foot ET: 2.070
Temperature F: 87.0
Timeslip Scan:
Car Make: Chrysler
Car Model: Crossfire
Car Type: srt-6 Car
Year: 2005
Driver: Jason Betley

Time slip from a stock 2006 GTO:

1/4 Mile ET: 13.283
1/4 Mile MPH: 107.940
1/8 Mile ET: 8.709
1/8 Mile MPH: 85.180
0-60 Foot ET: 2.173
Temperature F: 69.0
Timeslip Scan:
Car Make: Pontiac
Car Model: GTO
Car Type: Car
Year: 2006
Driver: Kirk

No real winner but would be fun to watch.