I would say the exact opposite. IMO, I would say that the overall base talent level is a bit higher in the CHL than in the NCAA but you can't ignore the age gap. College players are on average 3 years older than Jr players and those 3 years of experience, maturity, development and growth make a huge difference. Check out the stats - the average NCAA roster is 21.5 yrs of age while the average WHL roster is 18.3. You can't ignore those extra 3 years, on average, college players have on Jr players when comparing the level of competition. It's ridiculous how disrespected college hockey is sometimes around here. How it the world would Schwartz be challenging himself with tougher competition by taking his game to the WHL? He did VERY well in the NCAA this year as an 18 yr old in a league primarily of 19-22 yr olds whereas next year, if he were to play in the WHL, he would be 19 in a league primarily of 17-19 yr olds. Jaden would absolutely torch the Dub. Jaden might take his game there, I don't know, but I doubt it would be to face tougher competition because that's simply not true. Both routes have their pros and cons and which route is better depends on the kid. It's a case by case basis.
IMO, the thing Jaden needs to work on the most is his strength and that's something that he should actually be able to do more of in college since they typically only play on the weekends. Again though, only Jaden knows for sure. All we can do is speculate. I'll add though that this is what Jaden had to say about it back in June...perhaps his thoughts have changed though.
LINK
As for why some players go from the NCAA to CHL, there are a few reasons but I would say that for most, it's because they weren't ready for college hockey yet, not because the competition wasn't good enough. The ones that leave the NCAA for CHL are typically the ones that struggled as freshmen finding their place on a team with a lot of upperclassmen. It's hard for some 18 yr olds, even very talented ones with NHL potential, to make a significant impact on college teams sometimes. Jaden was going to dominate no matter where he went but but some, I do think the Jr route is better. What you're saying doesn't make a lot of sense IMO though. BTW, if the NCAA would allow it, I'm sure there would be tons of kids going from the CHL to NCAA as well.