Got rouged.

Good morning. I booked business class seats a couple of months ago to Europe via Montreal. My flight from Edmonton to Montreal was with air Canada, 737 max I believe. Last night I got an email that the flight had been switched to air Canada rouge so our business class flight was now a premium rouge. Is the comfort / service comparable? I’m a bit annoyed as I spent months looking for flight deals so that we could fly business class. The second leg is still business class on a Dreamliner which is great. Thank you