The NFL is going to love him for 2 reasons. He's a deep threat, and he's very elusive and dangerous in the open field. Troy Williamson wasn't as good as Santonio last year, yet went top 10 to the Vikings because he was a good deep threat and did well at the combines. Santonio can not only get open and catch passes, but he can elude defenders and take the ball into the endzone where most bigger 6'3 type guys couldn't do that.
It's no secret in the NFL this season that the guys having the most success are smaller. Santana Moss, Steve Smith, Terry Glenn, Joey Galloway, Derrick Mason, Marvin Williams.