Our top tier men's league may not be at the level of the best leagues in Europe, but it still has its quality and is ideal for the development of young players before the draft. They can get high ice time here and really play a lot. And yet, it is definitely better than any junior league in the world.
This is a tricky statement that oversimplifies the question. What makes a league "better" than another league?
I'll start with a set of different questions:
1. Would the top team in any of the three CHL leagues beat the No. 1 Slovak men's team in a best-of-7 series?
2. Would an average team in any of the three CHL leagues beat an average Slovak men's team in a best-of-7 series?
3. Would the bottom team in any of the three CHL leagues beat the bottom team in the Slovak men's league in a best-of-7 series?
This is obviously purely hypothetical, but I'm inclined to say the answer to all three questions is 'no'. But does that mean the Slovak men's league is "better" than the three CHL leagues and therefore a "better" place to play for a prospect like Nemec? Again, I'm inclined to answer 'no'.
The reason why lower-quality men's teams are tough to play against for young prospects is purely their size, maturity (= reached their ceiling in all skill areas, e. g. skating) and physicality. But that doesn't mean those players are "better" – in the sense of having better hockey skills – than the top junior players in North America. And playing with and against teams of players who are actually good at hockey is extremely beneficial as well.
Along with that, junior programs are generally meant to develop players. There is a much bigger focus on that than there is in pro teams. In North America, Nemec would also have an NHL-like schedule and get accustomed to the smaller ice surface. There is a lot more that should be taken into account to determine the best place to be for the player next year.
With all this said, I'm actually quite critical of the CHL. There are some bad hockey players and bad hockey teams in this league. It really comes down to finding the right program that will give him the best opportunity to succeed. He shouldn't (and I don't think he will) just report to whichever team picks him in the import draft. Other European pro leagues would be great options too, I just don't think Slovakia would be the right place for him.