You continue to miss the major point, TJM. If he's a finisher, why isn't he trying to get more shots on net? Why doesn't he favor shooting more to begin with? Selanne didn't wait for the opportunities. He took them. He made them. Sometimes he made them out of nothing. That's a finisher's mentality. It isn't just waiting for the right shots. And really, we're talking about the NHL here. Every player has talent. George Parros hit 4 of 4 in the Anaheim skills competition multiple times, and he sucked. You think 3rd and 4th line players lack talent in this league? They don't. Those are terrific players. It's just that the true talent, the star and superstar players, in the NHL, are unbelievably good.
No, I wouldn't call Silfverberg a finisher. He does have a world class release, but he doesn't have a scoring touch. What he does have is a good work ethic and talent level. I do think he could find a way to score more goals, and take advantage of that release.
Edit: And, for the record, if a player was consistently going to the right spots and finding ways to bury loose pucks, I'd absolutely call them a finisher. I don't care if they are redirects, or rebound opportunities. I mean, you're basically describing part of Perry and Selanne's game. The puck found/finds them. Consistently. You think a finisher is just someone who has a great wrist shot? No. It's someone who finds ways to score.
If you want to see the difference between a legitimate NHL finisher, and someone like Sekac, see the 2007 playoffs. Perry had 6 goals in 21 games. Those are solid numbers, but they are hardly amazing. But you could tell he had a finisher's mindset, and that he was on the verge. How many close calls did he have, just by driving the net and taking shots? Just by playing with the mentality that every time he had the puck he could score. Even now, if he goes through a rough patch, you can usually tell when he's about to get going again, because those chances start to pile up. The same was true of Selanne before him. Forget the numbers for a minute. Just watch how Sekac plays. Do you see that in him? I'm not saying Sekac can't score, or that he can't put up some decent numbers, but there is no evidence at all that he is a finisher, and he certainly doesn't play with a finisher's mindset. Yeah, I'm going to say that's evidence he isn't one.