The statements about Samus are strange. Samus is faster in Super Metroid (where her old design came from) than in Other M so an Other M design is no reason for a speed up. Then again, Other M is pretty much the worst game ever and is hated by basically the entire Metroid fanbase and they are acknowledging it exists so I don't really get how they're interpreting that game at all. For that matter, I'm not really seeing evidence she's faster in smash 4 beyond the normal balance tweaks any bottom tier character would get for a new iteration. All the talk about her changed design in the developer direct was purely cosmetic; he never said her moves in general were going to be faster.
The fact that we haven't seen that title and even more that it has such an odd logo that doesn't incorporate the typical smash logo is strange.
The worst part is the talk about this or that franchise. That's not how it works. Remember when Fox, Falco, and Wolf were in Brawl despite Star Fox being a franchise that was going nowhere fast? A lot of people on the internet talk about "rep" and the size of this or that franchise, but it's way less important to Sakurai than it is to people on gamefaqs. This has been proven consistently. Are Mother and F-Zero finished? Maybe. Does it matter for smash? No, it really doesn't. The fact that that's shown as being a top consideration is something uncharacteristic. For that matter, the talk about which characters are in dominating the conversation is even stranger. I severely doubt that the roster is the top priority in development; Sakurai has always been about having a big new idea for a game and building around that, and I'm not seeing that here (unless your expanded stickers from SSE idea is supposed to count).
It's possible this is real, but it seems far more likely to me that it's not. This is doubly true as it's very unclear why such a fact sheet would ever have been made; who was the intended audience of this thing? If it was an internal thing, why go thorugh the trouble of including the logos for each language version and that and generally present it like a public document? If it's supposed to be presented to someone, the content seems bizarre. Overall this is just too dubious really.