Granlund and Sven are a little different, but similar skilled players and would essentially fill the same role. I can't see Granlund playing center for us ever unless Backlund is shipped out at some point. He's not going to play over Monahan, Backlund or Bennett. And you don't want a guy like that playing on your 4th line. Heck, I'd say Shore is almost ahead of him for centers as well because Shore has excellent size and is good at FO's. So I think it's inevitable that he will be moved to the wing.
To this point in their pro careers, Granlund has been much better than Sven. I think Granlund could develop into 40-50 point winger. While Sven has a higher ceiling, he hasn't really shown us that he projects to be more than that either. If I had a choice of keeping Granlund or Sven, I would of kept of Sven for his ceiling but it's not as if the difference is huge.