I don't buy the idea of AMD sandbagging at all. We already know the FE is "full fat Vega". The only possible improvements for their top end card would be better power management (to both reduce power consumption and prevent throttling to better sustain boost clocks), or improved performance through drivers. The former doesn't help much with performance (Gamers Nexus undervolted and boosted the power limit of the FE and it didn't exactly become a 1080 Ti competitor) and the latter doesn't help with power consumption. So unless they improve both of these areas significantly, which is a hugely tall order considering they're showing off the cards this month, I can't see it being a better option than the GTX 1080 except in terms of price and FreeSync compatability.