Let's start with the Montreal part.
Those outlets are far from Montreal.
More like a 35 minutes drive once you get off the island.

It's a nice place to walk around if you like outdoor shopping but you get around fast.
Has brands that only Holts and Ogilvy hold, which is great if you live in the North shore.

If you are looking for a deal to get your hands on brand names, you better stick to the conventional Winners.