You seem dead set on convincing everyone this leak is wrong. Everyone's free to speculate. As I've said myself, I'm not 100 percent on my source. But there are a few things I should tackle.
Little Mac, Pac-Man, and Mii Missing E3
I'll be the first to admit, I have no idea. There are literally tons of reasons as to why this person could've thought the trio would appear at E3. But even so, things happen, and not everything always goes according to plan. And Little Mac eventually showed. The guy is still backing Pac-Man and Mii, too. So, much like the rest of the rumor, time will tell there.
Pokemon from X and Y
Again, I don't know. This is what the guy told me, so it's what I posted. I don't know how involved he is in the game's development, or how 'inside' his insder knowledge is. There are, again, tons of reasons as to why he might not have known or been able to say the Pokemon's name. Or even describe him at that. Depending on the guy's involvement, it's possible he was only told about a "Pokemon from X and Y" being in the roster.
Safe Guesses
I see this term tossed around a lot. I honestly don't think there's any such thing. There are no safe guesses when it comes to naming a roster. Wii Fit Trainer wasn't a safe guess, as you'll admit, and I don't know how 'likely' (again, this would be a synonym of a safe guess, which doesn't really apply as this newcomer thing can be pretty darn random) Mega Man, Villager, and Little Mac were, but this guy's 4 for 6 on his E3 leaks so far. Which is pretty darn good.
Leaker Not Leaking Other Things Like Stages, etc.
I don't know, I'm not the leaker. Why is this guy only telling me newcomers? Again, I don't know.
Posting a Baseless Rumor
"First, he didn't say he had a source because he wasn't sure that the source was credible. Of course, this is silly because all new sites post rumors regardless of their credibility."
I'm sorry, I'll try to maintain a crappier website.
Seriously, though, that second sentence is silly in itself. If I get an e-mail from "
blahblah@mailservice.com" with a list of characters said tipster claims will be in the game, would you expect me to just run with it without first attempting to verify the guy? If I cared more about hits and less about credibility, sure. But that's not me.
Making Things Up
Let's get one thing straight, and long-time followers of my site will attest to this. I don't make things up. Not for traffic, not for anything. My site exists to provide game news in the most excellent way possible. I don't fabricate information. I'm just like all of you in this, and I'd be pretty pissed off if anyone did something like that. Again, I'm still not 100 percent on my source, but so far he's in the green with his 'leak.'
"In otherwords, Sal's website is very no name. How can you improve searches? Why, have a fake rumor of course. And since he got Wii Fit Trainer right, it's even better. Now you can drive hits to your site."
The site is pretty big actually. More hits would be nice, sure. But we average many more hits than I think you'd imagine per day. It's okay, though. You didn't know.
To Everyone Else
I think my talk with Star, as well as what I've written above, just about sums up everything I can think to say. But yeah. No one has to believe the leak. It's fun to discuss, but being dead set on proving these things true or false without further evidence is not really doable at the moment. Unfortunately it's a waiting game and that's what we'll all just have to do. But I'll tell you now, this isn't something I've gone and pulled out my sleeve for hits. There's no debating that.
Edit: Also, to clarify some more, I've tried contacting this guy for more information. When Star mentioned the leaker being too busy to respond, what I said specifically was that the guy seems to operate on his own schedule, e-mailing me when he wants to rather than what I want him to. Star can attest to that.