It´s Dragon Quest, It´s an expansion of a previous game, and it´s half price. You can be sure that the Dragon Quest expansion didn´t boost the WiiU sales. It was the Xenoblade bundle.

Nintendo has stated that their digital sales exceed 10%  of total software and that Japanese make up a third of all digital sales. Digital sales for first party games sit at around 13%. This game was pushed hard digitally and Nintendo already said its digital sales were high. So over 10% is definitely not "highly" unlikely. (source: below)

http://www.gamnesia.com/news/nintendos-digital-sales-are-stronger-than-ever#.VUzSY_lVhBc

DQX has an active userbase of a few hundred thousands and some people get the expansion right away. the expansion will drop like a rock while xenoblade will have some legs at minimum.

Nothing important but the title is-media create sales- and the op doesn't have media create sales data but just dengeki's!lol

Sorry for the wait, editing now.

No need to apologize but anyway!:PPP:P:P:P:P

Famitsu have released their numbers by now as well:

Hard: Genre:

Ranking	Title (Manufacturer)	Models	Genre	Price	The estimated number of units sold	Kurorebi 10-point scale	Sold out
	PUZZLE & DRAGONS SUPER MARIO BROS.EDITION (Puzzle & Dragons Super Mario Brothers Edition) [Gung Ho Online Entertainment] April 29, 2015	3DS	Puzzle · RPG	4000 yen [tax]	177 963 This Total: 177 963 This	9.00 points
	Lore online [Square Enix] dragon of Dragon Quest X ancient April 30, 2015	Wii U	RPG	3800 yen [tax]	97,324 this Total: 97 324 this	-
	XenobladeX (Zeno Blade Cross) [Nintendo] April 29, 2015	Wii U	RPG	7700 yen [tax]	88,544 this Total: 88 544 this	8.50 points
4	Lore online [Square Enix] dragon of Dragon Quest X ancient April 30, 2015	Wii	RPG	3800 yen [tax]	84,185 this Total: 84 185 this	-
5	Brave Lee second [Square Enix] April 23, 2015	3DS	RPG	5980 yen [tax]	25,417 this Total: 122 637 This	9.00 points
6	GIRLS MODE 3 Glitter ☆ Corde [Nintendo] April 16, 2015	3DS	Simulation	4700 yen [tax]	25,343 this Total: 110 399 This	8.50 points
7	Minecraft: PlayStation Vita Edition [Sony Computer Entertainment Japan Asia] March 19, 2015	Vita	Construction	2400 yen [tax]	14,643 this Total: 128 235 This	8.25 points
8	To heart 2 Dungeon Travelers [Aqua plus] April 30, 2015	Vita	RPG	4800 yen [tax]	13,599 this Total: 13 599 this	-
9	a brooding her brought up how -blessing flowers- [5pb.] April 30, 2015	Vita	Adventure	6800 yen [tax]	12,139 this Total: 12 139 this	7.25 points
10	Tokyo Shinyo-roku operation Babel [5pb.] April 30, 2015	Vita	RPG	5800 yen [tax]	8503 this Total: 8503 this	7.75 points
11	Mario Kart 8 [Nintendo] May 29, 2014	Wii U	Race	5700 yen [tax]	7701 this Total: 972 647 This	9.25 points
12	Mario Party 10 [Nintendo] March 12, 2015	Wii U	Board game action	5200 yen [tax]	7599 this Total: 137 336 This	8.25 points
13	Shiatorizumu Dragon Quest [Square Enix] March 26, 2015	3DS	Rhythm game	5800 yen [tax]	7428 this Total: 96 500 this	8.75 points
14	Assassination classroom killing sensei large siege! [Namco Bandai Entertainment] March 12, 2015	3DS	Action	5690 yen [tax]	7235 this Total: 63 554 this	6.25 points
15	Specter watch 2 star performer [Level Five] December 13, 2014	3DS	RPG	4600 yen [tax]	7088 this Total: 2,579,663 this	9.00 points
16	Dying Light [Warner Entertainment Japan] April 16, 2015	PS4	Action Adventure	7600 yen [tax]	6511 this Total: 39 969 this	8.50 points
17	Super Smash Bros. for Nintendo 3DS [Nintendo] September 13, 2014	3DS	Action	5200 yen [tax]	5756 this Total: 2,313,651 this	9.25 points
18	One Piece: Pirate Warriors 3 [Namco Bandai Entertainment] March 26, 2015	PS3	Action	7800 yen [tax]	5160 this Total: 136 596 This	9.00 points
19	Pokemon Omega Ruby alpha Sapphire [Pokemon] November 21, 2014	3DS	RPG	4571 yen [tax]	4901 this Total: 2,791,475 this	9.25 points
20	Tropico 5 [Square Enix] April 23, 2015	PS4	Simulation	7800 yen [tax]	4133 this Total: 12 503 this	8.50 points
21	Xenoblade Chronicles [Nintendo] April 2, 2015	3DS	RPG	3700 yen [tax]	3620 this Total: 68 162 this	-
22	Pro Baseball Spirits 2015 [KONAMI] March 26, 2015	PS3	Sport	7600 yen [tax]	3528 this Total: 100 580 This	9.00 points
23	The Animal Crossing: New Leaf [Nintendo] November 8, 2012	3DS	Other	4571 yen [tax]	3472 this Total: 4,325,735 this	9.75 points
24	Regoshiti undercover Chase Begins [Nintendo] March 5, 2015	3DS	Action	4700 yen [tax]	3454 this Total: 43,074 this	8.00 points
25	Future Card Buddyfight friendship of爆熱Fight! [Fleurs] April 16, 2015	3DS	Card games Adventure	4980 yen [tax]	3448 this Total: 20 462 this	6.75 points
26	3rd Super Robot Wars Z Tengoku hen [Namco Bandai Entertainment] April 2, 2015	PS3	Simulation · RPG	8070 yen [tax]	3318 this Total: 133 266 This	8.00 points
27	Bray Blue Chrono Fantazuma extended [Arc System Works] April 23, 2015	PS3	Action Adventure	5800 yen [tax]	3308 this Total: 26 581 this	8.50 points
28	Bloodborne (Brad Vaughan) - Sony Computer Entertainment Japan Asia] March 26, 2015	PS4	Action · RPG	6900 yen [tax]	3307 this Total: 196 384 This	9.00 points
29	Sword Art Online - Lost Song - [Namco Bandai Entertainment] March 26, 2015	Vita	Action · RPG	6170 yen [tax]	3203 this Total: 169 791 This	8.00 points
30	Hana Yaka Hara, Warega clan modern Nosutaruji~i [Idea Factory] April 30, 2015	Vita	Adventure	5800 yen [tax]	3004 this Total: 3004 this	-

Hardware:

Puzzles and Dragons not so good. Anyway.

But that includes the 3DS doesn't it? Because digital sales on handheld devices are higher than on consoles.

Don't know if the software sales are the best they could be given Wii U's situation is Japan, but the boost was actually quite good, when you take into consideration that with MK 8 - with vgchartz numbers in mind - Wii U went from 8.9k to 19k. Now it was what, 6 or 7k to 22k?

XBC managed to boost Wii U even higher than MK8.
I would consider this as a sign that if Nintendo bets on games that japanese gamers like, it will pay off.