The way that the Tekin and Mamba Max Pro ESCs advance timing is for sensored motors only. Using a sensorless motor you are stuck with whatever you set from the start.
My experience has been that timing advances will "bog" the bottom end just a bit, similar to using a larger pinion, unless you are way overpowered, then you will not feel much difference in bottom end torque. Castle recommends changing your gearing as needed, since most motors have a range of timing that works best. With the VXL motor, I think an increase in timing would not cause torque to suffer enough to notice, but a larger pinion will definitely divide your torque output. But really, for each application many people could experience different things happening. Experimentation is the only way to find what will work best for you.