I think this is a pretty even deal, but you really need to hope that Tarasenko can repeat what he did last season. You got the best defender in the league with Karlsson, that's something to be excited about and Tarasenko should have a little bit more points than Perry (like 5-10), but i would definitely want Okposo and Simmonds over Sharp and Kreider.
So if Taransenko is for real you got the two best players in that deal and you win it, otherwise it's still a good deal but not as exciting.