No, I'm talking about Runescape, PerfectWorld, and all the games you see advertisements for on the website.
The games that Armor Games have at the moment are small flash games entered by the authour, whom thereby gives consent to publish the games.
If it's another company, I believe that Armor Games would have to discuss such things as advertising in this case with JaGEx's marketing department and whomever runs PerfectWorld. I doubt Armor Games will do anything like that, since it would involve a lot of hassle and have next to no benefits.