No. Example: Heroic. I did it the other day, matchmaking, two people. One actually plays the game. Really good. The other one... gets on his sparrow and tried to kill us... Managed a few times too, or pushed us in the fire line of the Ogre... Here's a tip for you: do heroic first, and send FRs/game invites to the people you get teamed up with if they play fair. Then do nf with them.