1.) Wii Music lifetime sales will be about 500k higher than LittleBigPlanet lifetime sales. That's incredibly conservative. I'd say far more really, maybe even 1M higher. 

2.) Gran Turismo 5 will have the worst opening week of any game in the series(sans Prologues). Meaningless prediction, we have no way to count whether it is true or not. Anyway, I doubt this. The original GT had a relatively low opening, as it wasn't known. Almost certain to be incorrect, but we have no way to determine that. 

3.) The gap between the hardware sales of the Wii and the Playstation Portable will be at least 4 million by the end of 2009 and in the Wii's favor. Du'h. Any idiot who has spent 5 minutes at VGChartz would see this. 

4.) Sonic and the Black Knight will be the best selling Sonic of this generation(sans Mario and Sonic). No way! That's Sonic Rush at 2.3M. Black Knight will probably not beat 2M. 

5.) Nintendogs sales will reach 25 million units worldwide by the end of 2009. Seems likely. Should be at almost 21.5M ETY 08, with almost 4.5M for the year. 3.6-3.7M should be easy next year. 

6.) old but.. Resident Evil 5 will be the worst selling RE in Japan(sans spinoffs). Depends. If you discount remakes (you didn't) definately. If not, I believe it will beat RE4 Wii over there (140K)

7.) No More Heroes: Desperate Struggle will have an opening week of over 100k units worldwide Seems probable, just a 30% increase over the original after all. 

8.) MKWii will outsell both versions of GTA by the end of 2008 worldwide. Well du'h! If you've been at VGChartz the past week, everyone should know this. It will happen next week damnit! (VGChartz data)

9.) Wii Sports Resort will have an opening week of over 500k in Others as well as a opening week of 500k in America. Seems incredibly likely. Still, why you are predicting the opening week sales of a leg game seems odd to me. 

10.) Play on Wii Pikmin 1 will have an opening week of over 250k worldwide and Play on Wii Mario Tennis will have an opening week of over 150k worldwide. Why not? Sure

1.) Wii Music lifetime sales will be about 500k higher than LittleBigPlanet lifetime sales.
It's already ahead and selling 100k more per week, sure that weekly gap will fall after Christmas, but it's going to be a lot more than a 500k gap.

2.) Gran Turismo 5 will have the worst opening week of any game in the series(sans Prologues).

3.) The gap between the hardware sales of the Wii and the Playstation Portable will be at least 4 million by the end of 2009 and in the Wii's favor.
It will be way more than that... Wii sales are likely to be near if not over 30 million for 2009, for PSP to be behind by only 4 million it would have to sell 26 million

4.) Sonic and the Black Knight will be the best selling Sonic of this generation(sans Mario and Sonic).

5.) Nintendogs sales will reach 25 million units worldwide by the end of 2009.

6.) old but.. Resident Evil 5 will be the worst selling RE in Japan(sans spinoffs).

7.) No More Heroes: Desperate Struggle will have an opening week of over 100k units worldwide.

8.) MKWii will outsell both versions of GTA by the end of 2008 worldwide.
It will happen next week, so yes.

9.) Wii Sports Resort will have an opening week of over 500k in Others as well as a opening week of 500k in America.

10.) Play on Wii Pikmin 1 will have an opening week of over 250k worldwide and Play on Wii Mario Tennis will have an opening week of over 150k worldwide.