After all, Sherman set the new ceiling for star NFL cornerbacks when the Seahawks made him the highest paid defensive back in the league.
Peterson, with two years left on his rookie deal, didn't mind seeing the Sherman contract and "kind of" had a smile on his face when he saw it go down.
"I'm making OK money right now, but I'm just not making his money right now," Peterson told ESPN on Monday.
Peterson is set to make $2 million in 2014 and, as a result of the Cards picking up his fifth-year option, $10 million in 2015. Drafted with the fifth pick of the 2011 NFL Draft, Peterson's become a star cornerback after just three seasons.
He's going to get a big extension at some point and believes he's worth the money.
"I think cornerbacks are definitely worth the dollars that they get because now this league is a passing league," Peterson said. "You need that shutdown corner to lock down one side of the field, or like myself, go out there the entire field."
"We'll see," Peterson said. "Got to ask the Cardinals. I mean, I think I am but at the end of the day both sides have to agree to terms and we'll see what those terms are and hopefully sooner than later."
Now look. The headline here is that "Peterson says he's better than Sherman." But he didn't really say that, even though he did.
If he'd brashly put down Sherman and declared himself the best it would be one thing. But this still has the potential to blow up if and when Sherman responds.