You said these titles have lost their appeal, but how did they debut on the WiiU? Didn't TTT2 do something like 5k first week? Getting support is one thing, having them sell is another thing. If anything, WiiU might replace the xbox' place in Japan when it comes to console multiplat titles.
Some 3rd parties had a rough start on Wii U last week, but that's not exactly unusual. This is how 3rd parties were met at console launches the past decade:
Xbox 360
01 Ridge Racer 6 (Namco) 29,891
02 Need for Speed: Most Wanted (Electronic Arts) 6,842
03 FIFA 06: Road to FIFA World Cup (Electronic Arts) 2,494
04 Tetris the Grand Master Ace (AQ Interactive) 1,531
PlayStation 3
01 Ridge Racer 7 (Namco Bandai) 30,318
02 Mobile Suit Gundam: Crossfire (Namco Bandai) 30,051
03 Mahjong Fight Club: Zenkoku Taisenban (Konami) 2,404
04 Miyazato San Kyoudai Naizou: Sega Golf Club (Sega) 1,394
Wii
01 Super Swing Golf (Tecmo) 12,673
02 Ennichi no Tatsujin (Namco Bandai) 10,292
03 SD Gundam: Scad Hammers (Namco Bandai) 9,801
04 Red Steel (Ubisoft) 8,823
05 Tamagotchi: Party On! (Namco Bandai) 6,994
06 Elebits (Konami) 6,505
07 Super Monkey Ball: Banana Blitz (Sega) 4,153
08 Trauma Center: Second Opinion (Atlus) 3,820
09 Crayon Shin-Chan: Saikyou Kazoku Kasukabe King Wii (Banpresto) 3,621
10 Kororinpa: Marble Mania (Hudson) 2,553
11 Escape from Bug Island (Spike) 2,015
12 Monster 4 x 4 World Circuit (Ubisoft) 1,089
13 Wing Island (Hudson) 728
Wii U
01 Monster Hunter 3 Ultimate (Capcom) 110,149
02 ZombiU (Ubisoft) 11,226
03 Warriors Orochi 3 Hyper (Tecmo Koei) 6,184
?? Ninja Gaiden 3: Razor's Edge (Tecmo Koei)
?? Tekken Tag Tournament 2: Wii U Edition (Namco Bandai)
?? Assassin's Creed III (Ubisoft)
?? Batman: Arkham City Armored Edition (Warner Bros.)
?? FIFA Soccer 13 (Electronic Arts)
?? Mass Effect 3: Special Edition (Electronic Arts)
In general Wii U seems to be business as usual, the only real difference is that not *everyone* bombed week one. Cue the cries of "doesn't count".
