First, Ruutu is not a center. Based on recent faceoff stats, Staal-Jokinen-Sutter are their top-9 centers. Second, I can't see Carolina doing this unless they really fall out of the race. Even then, given our history, I'm not sure they'd do this deal. Isn't it the case that we've never traded with them? Third, I'm not sure the difference between Boyes and Ruutu is the difference between a pick in the 35-40 range (where I think CGY ultimately finishes) and a pick around #100 (where I think CAR's 4th rounder ends up). With the former, you can get a good talent who just fell out of the 1st round. With the latter, you're taking much more of a longshot. I think that CGY 2nd rounder should either be kept in an effort to restock our forward cupboard, or traded for a player signed beyond this season.
I would do this in a second - In fact I've suggested it a couple times myself. Carolina might be looking for a bit more lopsided deal in their favour, but even then it would still most likely be worth it.