Tukonen is further devloped but to be honest I really haven't been very impressed with him as yet, I have my doubts he'll be more then a checking line guy.
Tlusty... hard to judge so far, haven't really seen him much outside the World Under 18's. I'm quite fond of the pick so far relative to others available at the time, but I don't see his upside as quite as high as most others appear to.
Tlusty is coming over to North America for this season so it'll be considerably easier to judge after the season.
Presumably headed to the OHL,the AHL is an option but given his age and inability to speak english I'd be loath to throw him into a professional environment in Canada too rapidly, it seems likely the OHL would be better for his emotional growth as a player at this point.