It's impossible to say who is ultimately going to be right about the MB Air. In fact, unless it gets the official boot from the Mac lineup, we may never really know how well it does, since, correct me if I'm wrong, Apple does not release sales figures for individual models (heck, nobody even knows how many Mac Pros have been sold!).
While it is clear that the majority of the people on MR find that the MB Air does not appeal to them, this fact alone may not be a good enough indicator of how the average consumer will view this machine. It may come as news to some around here, but the average consumer has only a vague idea of what RAM, RPM, ethernet, USB, GHz, processor cores etc. are, and has absolutely no clue about things like Penryn and Santa Rosa (who comes up with these names anyway?!
). People with enough cash may buy the MB Air on looks alone, God bless them. Ignorance is bliss! Case in point, a year and a half or so ago, on the day the first C2D iMacs were announced, I was in the Cambridge (MA) Apple store and I witnessed a sales guy pushing the freshly obsolete CD iMac onto an elderly lady, without bothering to let her know that a new, more powerful, less expensive model was about to hit the street in a few days. To say I was seething on the inside would be an understatement!
I waited for the guy to go to the back of the store (presumably to get the iMac) and told this lady what was up. I don't think the poor thing understood a single word I said. I just couldn't take it anymore and left the store in disgust, without ever confronting the thug who was about to take advantage her. Sad.