For all saying his U18 performance doesn't matter because Pulkkinen and Rajala both busted, here's top 10 scorers in the u18 in order: Kucherov, Rajala, Ovechkin, Grigorenko, Kessel, W. Nylander, Zakharov, Kovalchuk, Pulkkinen, Matthews. Rajala, Zakharov and Pulkkinen were all later round picks so they weren't seen as high of prospects to begin with. Grigorenko is the only one there who could suggest u18 don't matter in Vesalainen's case, however there are 6 other who have been "pretty" good in the NHL too. Your argument is laughable for the tournament not suggesting anything when it comes to top tier prospects.
The great old Pulkks didn't work out because of his small size and his hockey IQ isn't good enough to make up for it. Not to mention he is pretty bad at playing defense for the NHL.
Good thing this Kristian kid is pretty damn big. So I do believe his u18 stats mean something. Might not be top 10 or even top 15 for that matter, but I think he has a better chance to succeed in the NHL than Pulkkinen ever did.