Wow people are macho with their GT's. The Boxster until the refresh was the "Porsche" that "wasn't" now they hit 4.2-4.4 all day, hell they kill the older 911s with ease. I used to laugh at them, but I know damn well how fast they are now. Torque wise I guess you have help, but you are fighting a 2900lb car vs your 3650lb car.... and that 5.0 ain't exactly a torquey v-8 compared to the rest.
I would love to see the official statement of Ford saying the 5.0 hits 0-60 in 4.2 though, as someone said above, as that is b.s.
*EDIT* Canuck89 said that, got proof that Ford said that? The stripped down Laguna Seca Boss (no rear seats) hit 4.1-4.3, and that is due to gearing and insane weight loss, a GT on average hits 4.8+ By no means SLOW, but come on man.
saying a stock GT hits 4.1-4.4 is claiming you are driving a GT-500 5.4l, not a GT, and the GT-500 if you realize how the clutch is, can even hit 3.8-3.9( -12 and minus). Get real and stop day dreamin speeds.
If you think you are right go up against a 392 Challenger (in a few months the R\T version it will be your common enemy as it gets the 475HP\TQ 6.4l, so better start now), or a 1LE SS Camaro. 5.0's never beat me when I owned my older SRT 6.1l tuned. Film that drag-race too. Lol, 4.2. Keep dreaming.