No. From what I can see he's basing the whole thing on a simple math that you and some others apparently have trouble to do. A 6-pin plus a 8-pin. Unless there is something else to be explained, that amounts to 225~300W max power.
I have no idea why a common sense push some folks' nerves so hard. Again, HD 5870 = 6-pin + 6-pin. A Fermi shown by NV = 6-pin + 8-pin. Unless somehow the world has gone around and 6+6 > 6+8, there is nothing strange to assume the latter being more power-hungry. I am not sure what you mean by "NV could possibly do something better than ATI". Is it something like "Fermi draws more power (6+8) from the PSU yet consumes less power" (?)
Well, obviously that doesn't make sense. And that's what you're saying. And as for power handling, NV's powermizer has never been as capable as AMD's powerplay since RV670. So it isn't surprising that one, especially a consumer, maintains a skeptical viewpoint until Fermi proves otherwise.