I doesn't matter when you registered the games as long as it's before the survey expires. For example, I registered SM64 DS and Nintendo.com when it launched, but someone who registered it today on Club Nintendo and did the same survey would get the same number of coins. I used the same email for CN that I'd used on Nintendo.com so my registrations transferred if they were on the above list.
I gave away all my imported Japanese Club Nintendo registrations, but now I'm curious if they'd work here. I doubt it.
I checked and I have all the Wii games registered and am only missing Pokemon Mystery Dungeon: Explorers of Darkness and Pokemon Ranger: Shadows of Almia DS. I have no plans to get them or the dozen or so VC/WW games I'm missing. I actually have 100+ VC/WW titles, but it appears Nintendo is only allowing new ones to count, and most of those don't have surveys yet.