How are Little Mac and Mii confirmed to be fake, exactly? I don't have a link, but I'm pretty sure Sakurai said something about being interested in including Miis. Also, since so many different rumors are talking about Little Mac (the "first reveal" rumor seems really legitimate), I wouldn't cross him out just yet.. See, even if the supposed leaker got it wrong with the statement about a Pokémon rep being the next reveal, that doesn't mean Little Mac won't be in -- it just means that the leaker is either fake or he was misinformed. I've got my hopes up for Mac! You can do it, little buddy!
(EDIT: Oh, my bad, I just saw the bolded red text mentioning Little Mac and Mii and presumed that they had been confirmed fake altogether. Looks like the red text just means the fake parts of the rumor in question.)
Also, WiiLuvU and his Duck Hunt Dog and other downright crazy rumors have lost all credibility in my eyes. :| I'm not buying his words.