i haven't tested this yet, but i would think in reference to the Pitch block, the word "tracking" is how it "tracks" the notes you are playing to yield the harmony, not a "double-guitar" effect.
i could be wrong, but there is a Tracking parameter in the Pitch block on all Axe versions which adjusts exactly that.
That's how I read it, too...This is language used on the website:
"A new Pitch block with improved pitch detection provides whammy, double-tracking, harmony, detune and more with astounding tracking and fidelity."
It reads as though it is a "double-guitar" effect.
"A new Pitch block with improved pitch detection provides whammy, double-tracking, harmony, detune and more with astounding tracking and fidelity."