Those are some huge possibilities, and we already know from the Kaplan interview that the big three or all going to be out before November's end.
I didn't even know there was going to be a Mario Party DS, though. In fact, a GameFAQs search does not merit any results matching the title. I'd go so far as suggest that this is true, solely because the creator of the list had the guts to include an unannounced game.
11/25 is also very similar to Melee's release, being about a week before it. My bet is that this is true.
Edit: I really hope you don't get in trouble for posting this list. The date for Brain Age 2 is, in fact, 8/20.
If this list could get you in job, I'd edit it all out. We don't want you to lose your job for an exclusive on release dates. Anyways, like I said, for what it's worth, to me, this list seems entirely accurate.