I still don't get the point of the mega itself. The teaser only works with everyone in on the joke because the gimmick already existed with base Malamar. You could have the exact same story with a normal Malamar, and it basically was just base Malamar being advertised for the week anyway.
It's like if they made a marketing campaign about people liking Machamp because it has 4 arms, and just talking about how it having 4 arms is so cool and tough, and then the reveal is that the mega still has 4 arms and is also smarter. It just doesn't feel like anything was being built up to that wasn't already there.
Meanwhile Victreebel and Hawlucha are at least explicitly doing things the normal mon can't do in their showings to show there's a design OR power difference. Like this is a fine teaser for the concept of Malamar itself but it fails to show off the difference of a mega to me.