My Ryan for his Kessel?
 

Team and stats are in sig.

This is really close in my opinion. I'd take Kessel though. He won't give you some of the periphery stats, but I think he'll outpoint Ryan.

I like Ryan better, don't trust leafs. IMO

Based on your team, I'd stick with Ryan.

Kessel should get more points, but he's lost Lupul so who knows how much that could affect him. Without SOG, Kessel is useless in all peripherals.

Ryan is more balanced in your league. Kessel is one dimensional and you have enough of those guys (Backstrom, Giroux, Karlsson, etc). I vote Ryan.