Well as a guy in the middle of the competitive Brawl scene as it's in its death-throws it seems like Brawl wasn't well-received for the long-term.
When you hear more about it being a "disaster" than high-quality, yeah it's real easy to assume the consensus is more negative then positive. On the Internet, Melee is the favored game these days. That's where my comment stems from: the Internet, not the Nintendrones who are gonna buy it regardless.
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The King of GameFAQs Brawl posting from his phone.
http://images4.wikia.nocookie.net/board8/images/8/8b/ViviffChampS1.jpg