<< Fill rates are critical at higher resolutions >>
That is completely the opposite of the truth. As the resolution increases, the memory bandwidth of the card starts to limit the fill rate of which it is capable.
No, it's not the opposite of the truth. Bandwidth is just as critical to fill rate as memory size, maybe more so, but if you check my posts I never said that memory bandwidth was unimportant. If you have high bandwidth, but not enough memory to hold the data the extra bandwidth is wasted. If you have high memory, but not enough bandwidth the data is bottlenecked. Both are important, to overall performance, but neither is "the opposite of truth"...