The AHL is not an easy league to run up numbers in. Only two guys hit the 70 point mark last year--Chris Terry--71 and Phil Varone--70. It ain't easy to score. Most everybody can skate and check and a lot of those who would still be considered prospects are being groomed to one day become bottom 6 NHL forwards--to skate, hit, check and penalty kill and all that less than exciting ****. It's a more defensive minded league than the NHL.
American Hockey League Scoring Leaders | Top 100 2017-2018 – followthepuck
That should be taken into consideration when you have teenagers like Chytil and Andersson playing against pros/older guys--many of whom have NHL experience--some even some success at the NHL level. They're playing against physically mature and well schooled players who have played at high levels.
This is a valid point and one I have made myself. The AHL is not a high-scoring league.
However, through showing the leaderboards over the years, it also occurred to me that there are quite a few more players that likely would have eclipsed 70 or came damn close had they not been called up one or more times. To wit, from last year:
Lucas Wallmark, 55 in 45, played 11 games and spent more time up with Carolina
Daniel Sprong, 65 in 65 but played 8 games with the Penguins
Austin Czarnik, 69 in 65 but started with the B's for 10 games
Andreas Johnsson, 54 in 54 but spent 9 games plus time with Toronto
Kalle Kosilla, 54 in 55 before going up to the Ducks
Dylan Strome, 53 in 50 but also spent 21 games with Phoenix
Nic Petan, 52 in 52 but also spent 15 games in Winnipeg
And beyond prospects, there are guys like Reid Boucher down there who score at a point-per-game pace but eventually come back up to the NHL. There are a whole bunch more examples like I listed, both prospects and older player like Boucher. So, I definitely think that the AHL is tougher to post gaudy numbers in, but I think it's partly due to the nature of it being a developmental league, where guys that are killing it naturally will get a call-up to the NHL.
Again, however, eco's point is totally valid--it's not a high-scoring league. I think it's--
average, maybe. Probably fairly close to the NHL. So, it's probably unreasonable to expect a teenager to do more than .5 or .6 PPG, unless they're absolutely elite.