Why Canon 700D has focus pixels but Canon 6D doesn't?

[iaburn]

Hi, as I ask in the title, what is the reason for having focus pixels on a DSLR like the Canon 700D, and why other cameras like the 6D doesn't have them? I'm just curious because the 700D seems to have contrast autofocus on live view, so the same as the 6D.
It's very convenient not having to worry about focus pixels when processing the MLV files 
Thanks

[Walter Schulz]

700D uses Hybrid CMOS AF like M, 650D.

[iaburn]

700D uses Hybrid CMOS AF like M, 650D.

Makes sense, thanks