It's a combination of both, Ferguson takes a lot of shots in his fights to give back a few of his own, a guy with great movement would be able to exploit that. His chin is granite and he has crazy power though, so he's always dangerous.
Vannata displayed great movement, good striking and an amazing chin. He'll have a bright future at FW in the UFC imo. Just when you think that division can't get any more stacked a guy like Vannata comes in and almost finishes the #3 LW in the world. Looking forward to seeing more of him, perhaps a can, a fight with Stephens or a fight with the loser Kawajiri/Swanson.