I think SSBB will probably catch up to Halo 3 too.
----
This is what I thought of your list back then... I think I am still correct on everything but Animal Crossing Wild World. (new stuff in red)
1. Wii Sports 18.52M (of course)
2. Nintendogs 17.35M (definately)
3. Pokemon Diamond/Pearl 13.65M (Yep)
4. New Super Mario Bros. 13.16M (Very very probably)
Super Smash Bros 64 + Melee 12.13M
5. Brain Training 11.69M (Yes)
6. More Brain Training 9.85M (Aye)
7. Wii Play 9.70M (Yarr! for sure)
8. Mario Kart DS 9.45M (possibly)
9. Animal Crossing: Wild World 8.90M (I am doubtful, but maybe) (I shouldn't have been doubtful)
Super Smash Bros Melee 6.58M
Super Smash Bros 64 5.55M
10. Super Mario Galaxy 5.54M (I think it unlikely)
11. Wii Fit 1.28M (Yes again)
12. Mario Kart Wii (Yep)
And, additional games of which at least 3 will beat Brawl...
Animal Crossing Wii (nope)
Grand Theft Auto IV 360 (very doubtfull)
Subsequent GTA games for any home system (no idea)
Halo 3 7.13M (nope) (this is undecided for me now, I think SSBB will pass it but I am not so certain)
Gran Turismo 5 (unlikely, but it's hard to say)
Subsequent Brain Training games for DS or Wii (perhaps for DS, unlikely for Wii)
Subsequent Nintendogs games for DS or Wii (subsequent Nintendogs games so far have been exactly the same game)
Wii Music or other as-of-yet-unknown Wii brand games (very doubtful on Wii music, no idea for the unknown)
Other unknown game(s) (maybe)











