Different side/styles, better production in equivalent stages of development. I didn't even know this existed until now.
This was a table that was posted in that reddit link that was largely used as evidence for why Griffith is "actually good":
|LINE||CF% ||XGF% ||GF%|
The argument was essentially Griffith helped Jagr and Barkov post the best results they've ever had.
I'll start by saying: I don't understand where that person got those xGF% numbers. From what I understand Puckalytics is the only resource that allows you to see a full line for WOWYs, and they don't include xGF% in their numbers. I'm not accusing him of pulling the numbers from nowhere but I'd like to see them for myself before reading too much into them so if I can't it's difficult to read into them much.
Second, when I did try to pull up the numbers for myself, I didn't get the same results the OP did. For instance, Puckalytics gives the Jokinen trio a 83.3% GF and 57.2% CF when they're together. Since the article doesn't specify a time line, I'm assuming that they're using career numbers, and not just this season. The post specifically says that Griffith helps Barkov and Jagr put up "flat out Goal differentials that they’d ever put up together". But right there Jokinen's numbers are actually better. With that said, that Jokinen line has only played about 107 minutes together, so it's a pretty small sample size. Which leads me to another problem...
... Why didn't the OP include TOI there? Probably because most of them are incredibly small like Jokinen's. Pirri only has about 66 minutes with those two, and again Puckalytics' numbers are different than the table: 66.7 GF% and 55.8% CF. Looking at Griffith's numbers specifically, he has about 87 minutes of ice-time with those two. Griffith averaged about 12 minutes with Florida so means they roughly played 7-8 games together. That just doesn't seem like nearly enough date to make any conclusions.
Anyways, yeah, the article as a whole just doesn't really pass the smell test. And quite frankly the Florida Panthers are the most analytically-inclined organization in the entire NHL. If those numbers held as much weight as the OP suggests they do I'd have to imagine they wouldn't have given him away for nothing.