Thats a bit of a stretch. The good NCAA teams are better than the good CIS teams no doubt. And they are hardly made up of "top CHL players". The majority of CIS players are mediocre ex CHLers and some junior A players.
Maybe the average CIS team is. Golden Bears have typically been made up of some of the better CHL players. These were guys that were top 5 on their team in scoring or importance. Either they were too small to be drafted or emerged later in CHL career. They could go pro and have a journey man career but getting education/stability is more important
Take a look at some old bears squads:
2013-14
Ringrose- 3rd on scoring on Tigers
Hickmott- 3rd on scoring for Oil Kings
Brent Ferguson- 5th in scoring on Rebels
Johnny Lazo- 4th on scoring on Tri City- 39 goals- ECHL now. One of best CIS players ive ever seen
Levko Koper- 82 points, 32 goals and one of top Chiefs players- AHL now
Kruise Reddick- 3rd on scoring for Tri city
TJ Foster- 4th on scoring for championship Oil kings- ECHL/AHL now
Jesse Craig- 37 points for a D- 5th on team in scoring
Etc etc. Bears have some of the top talent from many WHL teams- just not the stars and not the drafted players. I actually think itd be cool to see a top prospect go to the CIS for a year as they competition is older than NCAA and they play tight system play. If they could get a handle on those systems at 18 years old theyd have a massive leg up on other guys their age.