Chiasson is not a 40 point player...he has a career-high 35 points. Kane is younger and has a career-high 57...in 5 fewer games. He hasn't been on pace for less than 53 over the last 3 years.
Bolded: Over his career, he has been on pace for 18 goals and 40 points. He was on pace for 37 last year and he's on pace for 38 this year. He's also only in his 2nd season in the NHL.
Underlined: He hit 57 once, and his production has been declining ever since. Over his career, he has been a 25 goal, 50 point winger by his pace. In the last 2 years, when Chiasson has played in the NHL, Kane has been on a pace of 23 goals and 52 points. The difference of 5 goals and 12 points really isn't significant.
The fact that Kane, after 5 seasons in the NHL, is only out producing Chiasson, after 1 season in the NHL, by a 9 point pace this year should either speak pretty poorly on Kane or it should say that Chiasson isn't too terribly far off from Kane.
Kane also doesn't have any fundamental question marks like skating which could hamper his ability to produce.
The two really aren't comparable, VM.
Kane has perceived attitude issues, which are a lot harder to fix than skating issues. And again, poor to mediocre skating didn't prevent Neal from producing. Chiasson is also bigger than Kane. I just don't understand why you think Chiasson can't develop to score 5 more goals and 10 more points to become a good scoring winger.