You're wrong. AMD can provide far more bang for buck in the high-end category now so it will take a sizeable cut from Nvidias sales for sure.
Not as sure. Where i live, the 780 is a bit cheaper than the 290 (after the price drop), yet its also a bit slower. The Titan is not a match, thats an overprized monster from the past. Also, atm, i would choose the 780 because of the very poor stock cooling on the 290.
Will be interesting, how much quicker the 290 will get with some custom radiators or water cooling fitted on it (i suppose you know how the boost system works on it), also how the 780Ti will perform and will be priced.
Anyways, its pointless trying to talk normally to blind fanboys - just like fighting a drugged berserker. See, semp have choosed the 465 too, what was the worst buy at its time, even more, he SLI-ed them...