First thought... Vick is getting more heat because he is a celebrity. More visible, more people know of him, and more people feel "affected" by him.
Second thought... Lack of heat on this guy who pled, doesn't necessarily mean hypocrisy. It's just that people know Vick. If Vick were to cop a plea, own up to it, and testify, then the heat would likely turn down a smidge.
Third thought... the feds go after the guy at the top because if they don't get the source of funds, the source of funds can go get any number of braindead henchmen to oversee the day-to-day operations. He's the one with the money, and there's never a shortage of guys who will break the law if you pay them enough.
No doubt this hurts Vick's case... it's not the death knell, because his attorneys will question his credibility. Depending on his background, it could be an afterthought, especially if the other things we read of in the indictment are proven by credible witnesses.