GPU Gauntlet Sorting should my ASIC score be this low?

[EasterEEL]

I am the proud owner of a Gigabyte 980Ti G1 graphics card and have high expectations to be able to overclock this card well as Gigabyte advise on the web site:
SOC ─ GPU Gauntlet™ Sorting - With GPU Gauntlet™ Sorting, the Gigabyte SOC graphics card guarantees the higher overclocking capability in terms of excellent power switching.

To be honest I was disappointed to find the graphics chip ASIC value is a relatively low 64.1%, lower than my unbinned MSI 680 (72.5%) or PNY 580 (80%).  My understanding is the lower the ASIC value the more voltage is required to achieve a given overclock frequency e.g. more fan noise to dissipate the heat and ultimately ability to remove heat will hinder maximum overclock.

This seems unfair as I paid more for a graphics card with Gauntlet Sorting. Why would a graphics card with a low graphics chip ASIC pass Gauntlet Sorting?

[EasterEEL]

I hate replying to myself but... just to report my G1 is not a particularly good overclocker.  The core at 1240MHz boosts to 1404MHz but at the expense of fans making a ringing sound running at 60%.  I'm sure it would o/c further if I increase voltage but then I would not be able to handle the fan noise.