Underlying numbers aren’t Biff Tannen’s Sports Almanac. It can make predictions, but as the ol’ Saying goes, “The proof is in the pudding.”
All Kapanen has proven thus far, is that he’s a quarter step above the AHL level.
Look. I have absolutely no problem having a rational and logic discussion about the potential of players, but to say or imply that Kapanen is this burgeoning gazelle of a talent is ludicrous at best and outrageous at worst. Sticking to facts, logic, and rationality is the best way to go I believe.
I agree on the facts and logic, let's get you started down that path:
firstly, you obviously don't understand the underlying numbers. They are not predictive by nature (at least the common ones like Corsi/Fenwick, there are predictive measures like x.GF and a myriad of other complicated stuff that we won't get into), the common ones are a measure of what is actually happening when the player is on the ice and the relative versions of those are a measure of what happens to a player's linemates' numbers when that player is absent versus when he is present - this is correlative by nature, not predictive, but there gets to be a sample size at which the likelihood of that players' presence not being the cause is a statistically insignificant chance. So, let's recap - the underlying numbers are a measure of what's happening, not what will happen in the future
Kapanen has proven to be an effective checking line player in the NHL, in that the results that are generated when he's on the ice in checking line usage are generally positive coupled with the relative versions of those results also being very positive, implying that Kapanen has a positive effect on already positive numbers in a sample size that is large enough to be statistically significant (typically considered to be a few hundred minutes, Kapanen's at about 575 cumulative 5v5 minutes in his career). He has done this in spite of being set up to appear in a negative light by the same metrics with heavily defensive zone usage (most of these metrics are shot-attempt based, you don't get shot attempts for in your own zone and you do get shot attempts against) with low quality linemates
If you're evaluating Kapanen by box score stats (ie. 10 pts in 55 games) he won't look like anything, but there's a bunch of things you need to consider there that I'm guessing you're notm like: "game" is not a standard unit of measure as it varies by ice time and usage (PP/PK/Linemates/zone start/etc) and his career OIsh% (the percentage of shots that have gone in when he is on the ice) is about half of what an average NHL'er sees so he has been unlucky/his linemates are garbage and can't finish
secondly, when given top 6 usage at lower levels, Kapanen has produced at rates that place him firmly in "high likelihood to be a top 6 NHL scorer" territory. Again, this is a correlative observation, but his peer group of AHL scorers at 20 had about a 90% success rate of becoming top 6 NHL'ers by the article I posted (which I think framed Kapanen in too positive a light by including 1ppg and up players, rather than 1ppg + or - the same variance range, but the implication would still be a very positive one with that change made)
the original post you quoted also referenced Kapanen's floor being high, not the incredible ceiling that you seem to be projecting on to my opinion, so let me clarify: Kapanen is an NHL floor prospect with the chance to be a complementary 1st line player at the peak of his potential a la Patrick Hornqvist
now, please support "Jake Virtanen has a legit shot to be a premier NHL power forward" with evidence of some kind