I don't think Laine is generational (most Finns tend to overrated their prospects) I see him as Rick Nash type of player. You just don't compare someone to Lindros or Lemieux....
But you didn't mention Ovechkin? He still has a chance to break Gretzky's goal record and already has calder, art ross, 3 harts and 6 rocket richard trophies.... sure he has slowed down but so has Crosby.
Come on, Lindros was not Gretzky or Lemieux kind of special. Not even close to that. Although he did become a very good player already at young age. But he was also way more overhyped than Laine is now. He was talked to be "The Next One", like to be in the class that Gretzky or Lemieux had been. He never definitely became that class of a player although I would say that he could be thought sure as a legendary and great player. But a tier lower than Gretzky and Lemieux. Players in the same legendary players class could include for example Yzerman, Sakic, Sundin Selänne, Bure, Mogilny, Fedorov, etc. Lindros was not clearly better player than any of these legends, although different than most with his physical presence.
Ovechkin has been a great regular season goal scorer, but his performance has so far dropped every single year in the NHL playoffs and in the international top level tournaments, that I find it disrespectful towards the already mentioned legends, to start putting him in the same class with them. He is also very very one sided player and not at all an inspiring locker room player. He lives and dies with his shot, and unfortunately collapses almost every single time when really big and meaningful games are played.
Honestly to me all those fancy regular season stats that players have made, should be forgotten, or at least not emphasized so much, as so many people tend to do. In my opinion NHL has way too long season and way too many completely meaningless games. About 60 games per season would be enough. Even that much wouldn't really be needed, but of course the teams need their hockey sales, so the business needs the amount of games, but the game and the players wouldn't really need so many games altogether.
Anyway, it is also funny to read how people here are like profets or judges, who give their verdict already now, on if a barely 18 year old prospect like Laine is generational or not. How you even can define how a prospect is generational or not? I think one thing could be that for his own generation there has not been any other player who has as great abilities as he has. Or no one else has achieved at such young age so great things as the generational talent has done already. If these are the criterias, then definitely he is generational. If you make some other criterias, might be that you don't consider Laine generational. Anyways it is useless to think too much if a prospect is generational, because the only thing that really matters is will he after all become a generational player or not.
To me only Wayne and Mario (naybe also Bobby Orr) have ever been completely generational players, and the closest modern hockey player to that status would be Crosby. Others I can't see even close to that status. You need to be able to dominate in completely your own league year after year, to really be considered in the generational class. This is how I see it.
But anyway Laine, Matthews and Puljujärvi are really that class as prospects that I can see that with the right kind of development almost anything can be possible. On the other hand there are so many things that can go wrong, that it is also very much possible that they never become even legendary players. I definitely hope they all will become new legendary players, as we definitely need more of them in hockey. But I hope people wouldn't so easily start already making a verdict that this player will never reach this status or that status. If player is super talented, it is quite arrogant to say for sure that they will never become at least great players.