From what I remember, Versteeg didn't play often with Kessel. Talent that helps a player succeed is not only from players on his forward line, but dmen and the goalie as well. Kane gets to share ice with Keith, Seabrook, and Hjalmarsson, all of whom would be a significant upgrade on our top two pairings. And when Phil plays when Reimer goal tends, it's not like his defensive problems are helped at all by that either. Linemates, Kessel has the advantage the last two years, ONLY because of JVR, Bozak does not help him at all. In terms of other guys on the ice when they are playing Kane has the much better defensemen to mask his defensive flaws, and a goalie that is more likely to bale him out when Reimer plays (which isn't too uncommon)