Actually, there are ways to figure out if Wii torrents are fake without downloading them. If it is an ISO, if it isn't the correct size it is almost certainly fake (not 100%, it could be an ISO containing RARs containing an ISO, but that is really stupid). If it is an archive of some sort you can use a torrent client with sequential chunk downloading to download the first pieces and check all the file headers, and the beginning of the ISO to see if it is actually the correct game. It is still possible to fake this, but harder, and most idiots who post fake torrents don't do it. If you really want to verify that something is real, download like the first 10%, extract a file from the ISO (a little tricky) like a text file or a movie and check that it is actually for the desired game (note that at this point, it is simpler to just download the ISO and check).
As to the possibility that it has been leaked already, I sort of doubt it as I would expect the torrent to have been posted here or on that one forum where everybody posts Wii ISOs, but it is possible (especially if it is on a private tracker).
I'm aware of all those methods, but you do you really think the guy who runs Zeldainformer.com and probably doesn't pirate because he gets review copies early really knows how to do any of that. HIGHLY doubtful.
And I agree with your 2nd part, if this guy were telling the truth that ISO would be all over by now. I'm a member of several private gaming torrent sites and it would definitely be on one of those by now if it were truly leaked. So I think it's pretty safe to say this guy has no idea what he's talking about and we can forget about it.










