It seems to me that destiny may end up taking over from CoD as the biggest selling FPS franchise. But I doubt it will reach the CoD peak of sales.
And it is going to be on PC, already announced I believe.
“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