The Crunch gp3000d does NOT make the same power as the Sundown saz-3000d. Sundown is rated at 12.8v and the Crunch is rated at 14.4v. The Sundown made 3200watts all the way down to 10v where as the Crunch only made 2800watts @ 12v. Feed the Sundown a solid 14.4v and you'll see 4kwatts+ easy.
What voltage are the AQ amps rated at? If its 14.4v then I believe the Sundown will make more "real" power.
As stated earlier by 169db on page 2. This is also on the AQ website as well.
Specifications
Model AQ3500D
Digital Monoblock 1 ohm stable
Input Sensitivity 0.2V ~ 8V
Variable Low Pass Filter 20Hz ~ 200Hz @ 24dB/Slope
Subsonic Filter 10Hz ~ 50Hz @ 24dB/Slope
2 amp linkable connection Output Master / Input Slave
Remote Gain Control yes
Clipping Display Led yes
Signal to Noise Ratio 85dB
Damping Factor 250
Efficiency 85% at 4 ohm
External Fuse Rating 300 Amp in-line, 600 for pair
Tested Voltage and THD 14.4V with less than 1% THD
Working Voltage 9.5V ~ 18.5V
4 ohm power 990W x 1
2 ohm power 1,860W x 1
1 ohm power 3,500W x 1
1 ohm Power @ 16V @ 1% THD 4,000W x 1
1 ohm Power @ 18V @ 1% THD 5,100W x 1
1 ohm Power @ 18V @ 10% THD 6,500W x 1
2 ohm Linked Power @ 18V @ 1% THD 10,000W x 1
2 ohm Linked Power @ 18V @ 10% THD 13,000W x 1
Dimensions 540mm (L) x 238mm (W) x 59.6mm (H)
Power and Ground Inputs 0 Guage
Bottom line is it comes down to personal choice. Both should perform and perform well.