For starters, Inferno, I found that hard to read. Next, Samurai Panda hasn't only posted his colaborated information here. If I'm not mistaken, one of, if not the, first place he did was GameFAQs, and I was there when he did. This site doesn't have something others don't.
Next, while for the most part we can only speculate, what other reasonable direction is there to take? He wants to make aeriel combat a larger topic in Brawl. Okay, for that to happen aeriels would have to have less knockback and/or be suspended longer (Take Pit's and Metanight's fight in the trailer, for example). That leaves only room for logic to take over. You can't have uber fast-paced ground battle and then a slow (Relatively) aeriel combat system.