Both of these games are far from flops and will likely both pass 5m lifetime.
Its very common for the second release of a game to sell less than the first on a particular console.
God of War > GoW2, GoW3 > Ascension, Mario Galaxy > Galaxy 2, Gran Turismo > GT2, GT3 > GT4, Zelda > Zelda 2, Ocarina of Time > Majoras Mask, Twilight Princess > Skyward Sword.
Also with GT6 releasing at the same time as PS4/One it makes sense why initial sales are low but the game will have legs and probably be the best selling PS3 game of 2014.
As for 3D World of course install base is a major reason for low sales, but it already has 25% attach rate and will continue to sell well for the entire lifespan of Wii U.
Another thing is that both of these games will likely be bundled at some point and will become $20 Greatest Hits/Nintendo Select titles down the road. I would be very surprised if these games dont pass 5m lifetime.
When the herd loses its way, the shepard must kill the bull that leads them astray.
