Of course they sell. It's just that they are overshadowed by the amazing sales of Nintendo published games. But then the vast majority of PS360 games (combined) are overshadowed by the amazing sales of Nintendo published titles.
“The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt.” - Bertrand Russell
"When the power of love overcomes the love of power, the world will know peace."
Jimi Hendrix