The problem is this.
Well, Crysis is like the definition of a game that isn't optimized very well.
And honestly this proves my point.
2-3 years from now that 750 ti isn't going to hold up very well for the games coming out 2-3 years from now at 1080p or even less than that (you will likely see the minimum specs start to be a 960 instead of a 750 ti pretty soon). And Scorpio doesn't have to run everything at 4k.