An opionion never can be wrong, that why it's an opinion. You can disagree with an opinion, that's true.
Anyway, i went, because i had some issues with the 560, from a 560ti to a 6870 and back again to the 560ti because in the games i play the 560 did really look better. Amd was very nice ( warmer colors than the 560 ) but i never had a real "wow" moment with it. While playing company of heroes or rise of legends for example on the 560, give me a lot of those moments. The explosion look better, the "metal shine" is more real, tanks and soldiers look more real.
And it's not because i like nvidea better or something that i'm imagining it, i was really fed up with the 560 issues i had and had high hopes getting better results with the AMD.
But maybe i play only those games which favour Nvidea i dunno.