thats fot the 1D x, and it's not the case with the 5D III
Actually, it's not for the 1D X. As PBD stated, "On the 1D
that would be..." 1D, as in the original Canon 1D, which is what rlarsen was complaining about.
Personally, I find spot metering linked to the AF point very useful, and on the 1D X it can be linked to any of the 61 AF points. That's possible on the 1D X due to the 100K pixel metering sensor, but not possible with the 5DIII, no matter what they do to the firmware. Look at the 61 AF points superimposed on the 63 zone iFCL metering grid: