It goes two ways. Crouse gets tons of ice time and first unit PP in Kingston. And still struggles to put up points. On a better team he'd probably be a 2nd/3rd liner with 2nd unit PP (if PP at all), so trying to extrapolate the way you have never works.
Part of the reason Kingston is so poor offensively is because their top lines are well below average. Now that's not all Crouse's fault entirely, but he is part of that problem. You could argue other top 10 forwards in this draft would elevate their team and line mates more than Crouse does. Certainly his lack of passing will mean if he is a 1st liner, it will be playing a very specific role.
It would be interesting to see what he produces with Bennett for a full season, to be sure. But even if his production was a bit higher, he is still in the same mold as Paul Bittner to me. Both are guys I'd love to draft, but not with a top 10 pick. Perhaps he'll end up a Blake Wheeler, or perhaps he'll end up a Colin Greening.