If GM's current '09 6.2L is making 403/417 isn't that better ALL other V-8 engines you listed above?
Last time I checked, 403HP is greater than 383, 381, 320 and 317 HP.
Last time I checked, 417TQ is greater than 404, 390 & 385 TQ, too.
Why are we comparing last year's GM motor to this years competition? Is that the only way you have to make GM look bad?

The 6L is an optional engine one step down from the 6.2L.
Why difference does HP/cubic inch make? If you knew anything about trucks, you'd know that more rotating mass is desireable in a truck.
To me, looks like Ford is the big loser. They're the only one with bigger displacement and a V-10 that can't even make 400HP.