I know numbers aren’t everything, but how is it that he hasn’t put up impressive numbers anywhere?
I suppose it's how you choose to interpret the numbers. Tkachuk didn't have the same amount of talent on his USNTDP squad that his brother had. The 2014-15 iteration was stacked. 31 points in 40 games as a college freshman is pretty impressive. I think we've just been spoiled by some other freshman performances in recent years. Kieffer Bellows went from 7 goals for BU as a freshman, left the program for the WHL, and subsequently scored 41 goals.
The other thing I'll be curious to see is if Tkachuk's shooting percentage regresses to the mean (if he chooses to go back to BU). I feel like everybody's looking at Tkachuk's 8 goals and deciding that's the takeaway number. The thing that sticks out to me was his 6% shooting percentage. This is where scouting somebody in person might help decipher whether that shows a lack of finish or if that may have been a fluky season.
At least for me, that's something I look for in a sleeper when it comes to a fantasy hockey draft. Guys who had a rough season tend to get taken later since most folks only look at the goal totals from the previous year and assume that the player is likely to repeat the same numbers. Guys like Giroux, Seguin, and MacKinnon had bad shooting percentages in 2016-17 but rebounded to have great 2017-18 campaigns. A guy like Craig Smith shot 7.7% in 2015-16 and then went back to a more normal 10.9% this year and he had his typical 25 goals. Brendan Gallagher went from 5.3% to 11.2% this year and potted 31 goals. (And similarly, the stay away guys are ones who shoot ~20% since that's difficult to repeat)