This generation Nintendo has been very fortunate with selling more software than X360 and PS3 even though they are steadily catching back up now.

However with the WiiU struggling it shows in the software for it's first year.  Even though I do expect WiiU to bounce back next year with some bigger games Like Smash Bros, Mario Kart, and X for example it really does seem Nintendo blew their headstart over the competition

XBO Top 5 Preorders (America)

1. Call of Duty Ghosts - 375k
2.  Battlefield 4 - 170k
3.  Forza 5 - 109k
4. Dead Rising - 100k
5. Ryse - 97k

PS4 - Top 5 Preorders (America)

1. Call of Duty Ghosts - 360k
2. Battlefield 4 - 340k
3. Killzone ShadowFall - 283k
4. Assassin's Creed IV - 251k
5. Watch Dogs - 161k

So with this information how long do you think it will be before XBO and PS4 either match WiiU's top 5 games?  

the top selling games on XBOX and PS are top selling franchises, while Wii U games not. Excepting NSMBU, but yeah XBOX and Sony games seem to catch up fairly easy. But will see, those franchises have announced games for the next year, so many people buying the consoles around E3 will wait until the next year iteration. That will hurt this year games sales, the same as Wii U. In all and all, we have to wait.

Based primarly on ps4 pre orders
Beating Nintendo Land 4 weeks max

New Super Mario Bros.U 4 weeks max

Zombi U 24 hours max

Lego city Undercover 24 hours max

Pikmin 3 12 hours max
The xbox one has more retail games so i expect total software for xbox one to overcome the Wii U at around the same time ps4 does it.

Ghosts on X1 will pass Pikimin in 2 weekks But the others, I don't know