there you go, i've removed the remakes and remasters they don't really count as "This gen" and if you are adding PC games then you might want to add SOE games as well.

i also added some PSP games you missed (i think i missed more)

Just for fun, I decided to do the top (metacritic) rated developed game from each 1st party for every year since 2005 (when each had a current gen system on the market).

2005

• Mario Kart DS (Nintendo) 91
• Wipeout Pure (Sony) 88
• Perfect Dark Zero (Microsoft) 81

2006

• The Legend of Zelda: Twilight Princess (Nintendo) 96
• Siphon Filter: Dark Mirror (Sony) 87
• Viva Pinata (Microsoft) 84

2007

• Super Mario Galaxy (Nintendo) 97
• Halo 3 (Microsoft) 94
• Uncharted: Drake's Fortune (Sony) 88

2008

• Super Smash Bros. Brawl (Nintendo) 93
• Fable II (Microsoft) 89
• Wipeout HD (Sony) 87

2009

• Uncharted 2: Among Thieves (Sony) 96
• FlipNote Studio (Nintendo) 93
• Forza Motorsport 3 (Microsoft) 92

2010 (so far)

• Super Mario Galaxy 2 (Nintendo) 97
• God of War III (Sony) 92
• Fable III (Microsoft) 81

Rankings

(1st place)

• Nintendo: 5 years
• Sony: 1 year 

• Sony: 3 years
• Microsoft: 2 years
• Nintendo: 1 year

I wouldn't say Sony have a better variety than Nintendo, this is off the top of my head by Nintendo:

2d Platformer:

New Super Mario Bros DS and Wii

Super Princess Peach

3d Platformer:

Super Mario Galaxy 1 and 2

Chibi Robo

Action:

Disaster Doc

Metroid Other M

Action-Adventure:

Zelda PH and ST

First Person Shooter/Adventure:

Metroid Prime 3 and Hunters

3d Tank Shooter

RPGs:

Xenoblade

Soma Bringer

Super Paper Mario

Mario & Luigi PiT and BIS

Magical Starsign

S-RPGs:

Fire Emblem: RD

Strategy:

Advance Wars DC and DS

Dragon Quest Wars

Puzzle:

Art Style

Tetris DS

Mario vs Donkey Kong

Planet Puzzle League

Kappa Trail

Party:

Mario Party 8 and DS

Wii Party

WarioWare

Shooter:

Link's Crossbow Training

Eco Shooter 530

Arcade Racer:

Mario Kart DS and Wii

Excitetruck/bots/bike

Sports/Fitness/Learning:

Wii Sports and Resort

Nintendo Touch Golf

Eyeshield

Wii Fit and Plus

Walking Trainer

Big Brain Acadamy

Brain/Maths/English Training

2d Fighter:

Super Smash Bros Brawl

Flying:

Jet Impulse

Starfox Command

Music:

Jam with the Band/Daigasso

Wii Music

Life Sim:

Tomodachi Collection

Animal Crossing WW and TGttC

Reading/Recipe:

Cooking Guide

100 Classic Books

i lol'd

ZING!

Though, I agree with you wholeheartedly on this one!

Microsoft is way ahead! 

Flipnote Studio- just remember that

SOE =/= SCEWWS.  They both operate independently, though SCE is supposedly going to publish the PS3 versions of SOE's games now.  This is quite different from MGS though, who has PC and 360 teams working under the same structural division.

Also, Patapon 3 already released (in Europe) and Eyepet PSP is contracted out to Playlogic for development.  Neither is applicable then.

I'd also take issue with taking out the 3DS remakes, as both are looking to be fairly substantial overhauls and filled with ground up new content.  I mean technically, Star Fox 64 itself was a remake too originally, but it added and changed so much from Star Fox it's generally considered an original game.  I tend to think SF3D will probably change up quite a bit itself... besides, if you wanted to add the PSP downconversion of Eyepet, I can't see much problem with the 3DSmakes.

LOLZ!  Totally wtf-accidental, but I like my title more!

Oh, I also forgot Turn 10 has Forza Kinect coming...