By the end of year:
01st Oct 09 Ninja Gaiden Sigma 2 100k +-20k
01st Oct 09 Shin Sangoku Musou: MultiRaid Special 200k +-50k
15th Oct 09 Uncharted: Ougontou to Kieta Sendan 100k +-20k
29th Oct 09 Bayonetta 200k +-50k
29th Oct 09 Tekken 6 300k +-50k
05th Nov 09 3D Dot Game Heroes 100k +-20k
12th Nov 09 Dragon Ball: Raging Blast 150k +-20k
Nov-Dec 09 Resonance of Fate 150-200k +-20k
Nov-Dec 09 Ratchet & Clank: A Crack in Time 100k +-20k
03rd Dec 09 Assassin's Creed II 100k +-20k
17th Dec 09 Final Fantasy XIII 1.5-2 mln. +-100k
VS
Oct 01 - Wii Fit Plus 1 mln. +-100k
Oct 08 - Valhalla Knights: Eldar Saga 100k +-20k
Oct 15 - Okami 100k +-20k
Ocr 29 - Super Robot Wars NEO, 500k +-100k Sin & Punishment 2 100k +-20k
Nov 05 - Mario & Sonic at the Winter Olympic Games 400k +-50k
Nov 12 - Final Fantasy Crystal Chronicles: The Crystal Bearers 350k +-50k
Nov 19 - Samurai Warriors 3 - 500k +-100k
Nov 26 - Puyo Puyo 7, Naruto Shippuuden Ryuuninnki 100k +-20k
Nov ?? - New Super Mario Bros. Wii 2mln. +-200k
Nov/ Dec ?? - Resident Evil: The Darkside Chronicles 400k +-50k
Dec - Tales of Graces 350k +-50k
Actually, only SRW and SW3(depends how well they will perform on Wii) with NSMB could bring new Wii owners. Other game, may sell more, than games from PS3 lineup, but Wii Fit Plus, M&S, FFCC, RE:TDC and ToG will mostly apply to same users, which already bought Wii for previous games of these series.
Same can be said about PS3, which mostly will have it`s sales from FFXIII, then a little Tekken 6 and maybe Bayonetta with RoF.
So, it`s mostly battle against FFXIII and NSMB. And in short term it`s FFXIII who will draw most new users.
Also there will be fight between pricecuts, which one will have more effect on Christmas sales.