The point is not invalid, the 290X was a tremendous value over the GTX 780 prior to today - yet it is now overlapping with overclocked aftermarket 780s. As I've mentioned earlier, I think that the 290X absolutely delivers in terms of performance, it's a great GPU with a cooler which is the same design that AMD has used for nearly four years. That cooler is also completely and utterly outclassed by what NV offers. It's also outclassed by various cheaper 780OC aftermarket cards. Because of this, IMO, it should be 499$ or less in light of this new nvidia price cut - AMD launched the 290X at 550$ specifically gunning for the 780. So if they're gunning for the GTX 780, maintain that course and gun for the 780. They can do that with by meeting NV's price cuts.
Like moonbogg said earlier, the 290X went from "awesome!" to "ehhhh I dunno" in like 15 seconds due to this price cut. If AMD matches what NV did (in terms of a price drop) that could potentially offset it.
Anyway with that said, i'm not a fan of the gloating/trolling overtone, that is just annoying. Very annoying. I'm with you on that 100%. That applies to people in both camps.