C'mon, Ian, the only "people" writing Nintendo off are you, and you're going to do it irrespective of any evidence to the contrary.
You were predicting the DS as doomed from the start, then despite making all the horrible mistakes you pointed out, any one of which was supposed to be completely fatal, its still doing great. Now you're saying it was just a case on Nintendo getting lucky.
You're going to be doing the same thing with the Rev until the day it launches, and probably for several years afterward. They could launch the thing tomorrow, have insane specs that kill the PS3, costs $99 retail, uses PS2 controllers, and comes only in Gun Metal Grey, and unless it launched with GTA4 and Resident Evil 5, AND promised that they wouldn't release any First Party titles based on existing licenses or rated younger than T for Teen for at least a year you'd still be on about how no one is taking them seriously.