FPV vs HSV, we win!

http://www.wheelsmag.com.au/features/1408/fpv-beats-hsv-in-definitive-power-test/
So I wasn't across the initial argument, but it appears that the results are pretty conclusive! How is this possible? HSV claim 430kW and it pulled less than 320rwkW on the dyno? Is HSV bullshitting or is this test no good? The GT-F claims 351kW and it pulled 340rwkW! What's the go?
So I wasn't across the initial argument, but it appears that the results are pretty conclusive! How is this possible? HSV claim 430kW and it pulled less than 320rwkW on the dyno? Is HSV bullshitting or is this test no good? The GT-F claims 351kW and it pulled 340rwkW! What's the go?