Sweat had a huge injury his senior year in HS. He's played all 3 years in college, but only recently looks fully recovered. Plus he's a linear player, explosive and long as all get out, but needs more strength and more consistency with his bend.
Hercules is simply a playmaker. He got his sacks and TFL from all over the line. Even dropped back off the line. He's Teddy Bruschi, best case scenario. Worst case scenario, he's a 3rd down pass rush specialist. His get off (burst off the snap) is one of the best I have seen. And he's very strong for a guy only 255. Playing inside at that weight shows me he's also durable.
And Minny thinks Hercules will be an effective pass rusher off the EDGE. And if Minny knows one thing, it's defense, especially pass rushers.
We still have a chance of stealing Mata'afa if he does not make their final roster or if they try to sneak him to their PS. Cowboys use Seattle and Minnesota as their farm system for fringe players, for good reason. Dallas has also had good luck with KC too.