The canonical tag only really tells the spiders there is similar content on the page that you've used the tag for, I wouldn't say that is passes any real "juice" as you call it.

You should probably restructure your links if you want the full benefit.

The seo moz stats for a site is not the exactly same as what google uses to determine authority/trust so just because one seems to have more authority does not mean google thinks it is more relevant.

Hence why even some new sites with minimal back links can outrank some very trusted sites on the same topic.

Welcome to the wonderful world of seo, strap in and get comfortable because it's a never ending journey.

All the best