2017 Canadian Mattress Cross Comparison Charts Needed

We are looking for a mattress and are aware that the big players change the name/ticking of a mattress and sell it at their stores. Would anyone have a link to how to compare mattress A at Sleep Country vs. mattress B at The Bay?

Essentially, I am looking for a Canadian version of this type of info:

https://www.mattressnerd.com/beautyrest ... son-guide/

Any help would be really appreciated.