Are you suggesting Stone is better than Duchene? Because unless you're playing fantasy, C's are more valuable than wingers. I like Stone a lot, but don't think he'll return as big a haul - guess we'll see.
People like Lebrun and McKenzie who talk daily with NHL executives have concluded that Stone is the most valuable rental. They've talked about this in multiple radio spots. They put Stone+Panarin neck and neck ahead of Duchene.
Stone should get a better return than Duchene. I don't think it'll be drastically better, but with Panarin and Duchene both apparently off the market, along with the possibility of a bidding war between CGY, WPG, and NSH, I don't think it's logical to assume Stone will attract a lesser return than Duchene.