Yes, and between his refusal to admit to having participated in the killing and his overt lying about drug use between the time of his plea and the time of his sentencing, he could well have doubled the sentence.
It's not like Mike Vick is some saint whose been wrongly persecuted here. He's a guy who broke a law -- and knew he was breaking a law, given the lengths he and his colleagues went to in order to keep their conduct surrep ious -- and then compounded his own mistake by lying at least twice to federal agents.
The length of his sentence is directly proportional to his own stupidity.