Lets discuss some PS4 sales

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Let's look at the top selling games ok

PS4 first

Pos	Game	Platform	Year	Genre	Publisher	North America	Europe	Japan	Rest of World	Global
1	Call of Duty: Ghosts	PS4	2013	Shooter	Activision	1.37	0.95	0.04	0.22	2.58
2	Watch Dogs	PS4	2014	Action	Ubisoft	1.08	1.05	0.09	0.32	2.55
3	FIFA Soccer 14	PS4	2013	Sports	Electronic Arts	0.51	1.56	0.08	0.26	2.42
4	Destiny	PS4	2014	Action	Activision	1.17	0.75	0.09	0.26	2.27
5	Battlefield 4	PS4	2013	Shooter	Electronic Arts	0.97	0.83	0.11	0.18	2.08
6	Killzone: Shadow Fall	PS4	2013	Action	Sony Computer Entertainment	0.71	0.93	0.07	0.18	1.88
7	Assassin's Creed IV: Black Flag	PS4	2013	Action	Ubisoft	0.78	0.79	0.05	0.16	1.79
8	inFAMOUS: Second Son	PS4	2014	Action	Sony Computer Entertainment	0.79	0.52	0.06	0.17	1.53
9	The Last of Us	PS4	2014	Adventure	Sony Computer Entertainment	0.47	0.50	0.05	0.15	1.18
10	Knack	PS4	2013	Action	Sony Computer Entertainment Europe	0.31	0.36	0.41	0.07	1.16
11	Need for Speed Rivals	PS4	2013	Racing	Electronic Arts	0.47	0.45	0.02	0.09	1.03
12	NBA 2K14	PS4	2013	Sports	Take-Two Interactive	0.74	0.19	0.01	0.07	1.01
13	Metal Gear Solid: Ground Zeroes	PS4	2014	Action	Konami Digital Entertainment	0.32	0.24	0.14	0.08	0.78
14	Madden NFL 25	PS4	2013	Sports	Electronic Arts	0.56	0.07	0.00	0.04	0.68
15	Madden NFL 15	PS4	2014	Sports	Electronic Arts	0.59	0.03	0.00	0.04	0.66
16	Wolfenstein: The New Order	PS4	2014	Shooter	Bethesda Softworks	0.22	0.29	0.02	0.08	0.62
17	Lego Marvel Super Heroes	PS4	2013	Action	Warner Bros. Interactive Entertainment	0.25	0.26	0.00	0.05	0.56
18	Thief (2014)	PS4	2014	Action	Square Enix	0.19	0.22	0.02	0.07	0.49
19	Tomb Raider (2013)	PS4	2014	Action	Square Enix	0.16	0.21	0.05	0.06	0.48
20	EA Sports UFC	PS4	2014	Sports	Electronic Arts	0.25	0.14	0.00	0.05	0.44

mean while let's look at the wii U

Pos	Game	Platform	Year	Genre	Publisher	North America	Europe	Japan	Rest of World	Global
1	New Super Mario Bros. U	WiiU	2012	Action	Nintendo	1.95	0.81	1.21	0.23	4.20
2	Nintendo Land	WiiU	2012	Action	Nintendo	1.75	0.72	0.43	0.21	3.11
3	Mario Kart 8	WiiU	2014	Racing	Nintendo	1.13	0.68	0.67	0.17	2.65
4	Super Mario 3D World	WiiU	2013	Platform	Nintendo	1.01	0.52	0.59	0.14	2.26
5	New Super Luigi U	WiiU	2013	Platform	Nintendo	1.02	0.42	0.15	0.12	1.72
6	Wii Party U	WiiU	2013	Action	Nintendo	0.22	0.28	0.79	0.05	1.34
7	The Legend of Zelda: The Wind Waker	WiiU	2013	Action	Nintendo	0.60	0.27	0.11	0.07	1.05
8	Pikmin 3	WiiU	2013	Strategy	Nintendo	0.34	0.16	0.26	0.04	0.81
9	Lego City Undercover	WiiU	2013	Action	Nintendo	0.39	0.24	0.10	0.06	0.80
10	ZombiU	WiiU	2012	Action	Ubisoft	0.37	0.24	0.05	0.06	0.71
11	Donkey Kong Country: Tropical Freeze	WiiU	2014	Platform	Nintendo	0.31	0.19	0.11	0.05	0.67
12	Monster Hunter Tri	WiiU	2012	Role-Playing	Nintendo	0.14	0.12	0.22	0.03	0.51
13	Mario & Sonic at the Sochi 2014 Olympic Winter Games	WiiU	2013	Sports	Nintendo	0.19	0.11	0.08	0.03	0.41
14	Wii Fit U	WiiU	2013	Action	Nintendo	0.14	0.07	0.17	0.02	0.40
15	Rayman Legends	WiiU	2013	Platform	Ubisoft	0.16	0.16	0.02	0.03	0.37
16	Disney Infinity	WiiU	2013	Action	Disney Interactive Studios	0.19	0.14	0.00	0.03	0.36
17	Sonic & All-Stars Racing Transformed	WiiU	2012	Racing	Sega	0.12	0.17	0.01	0.03	0.34
18	Just Dance 2014	WiiU	2013	Misc	Ubisoft	0.15	0.11	0.00	0.03	0.29
19	Lego Marvel Super Heroes	WiiU	2013	Action	Warner Bros. Interactive Entertainment	0.16	0.10	0.00	0.02	0.29
20	Skylanders SWAP Force	WiiU	2013	Platform	Activision	0.16	0.10	0.00	0.02	0.28

Look at the publisher column and you will see, something very interesting.