You make a few points that I'd like to address...
1. Thomas Reyonlds is the problem between chair and keyboard with respect to his self-built Windows box. I do not disagree. I doubt that Tomas Reynolds has reason to disagree either. The conclusion remains the same. He solved his problem by using a Mac instead. There may be other solutions, such as getting an expert to build the box or getting training to build the box, but the simplest/quickest solution in this case seems to have been to use a Mac instead.
In a similar situation for other people, the simplest/quickest solution to figuring out how to get a Mac to work would be to build their own PC instead.
2. Getting the most out of a Mac is more than using iLife. I dispute this. A Mac may have been bought purely to run iLife for organising photos or purely to run Garageband. That user would very much be getting the most out of his Mac.
To argue that this is not true is rather like suggesting that a designer who only uses her PC to run autocad is not getting the most of it. If that's what she bought it for, then that's what she bought it for.
My mother-in-law gets the 'most' out of her MacBook. She runs Mail, iPhoto, Safari and NeoOffice, occasionally scans something and occasionally prints something.
3. This "typical Windows power user" thing is a red-herring. What does 'power' mean ? It's not CPU usage. Someone encoding a DVD in iLife or watching soemone falling over on Youtube is likely using more computing power than someone who spends all day writing code. Typical 'Power' User then is not Typical User. It's a user who needs an atypical level of control. An atypical user.
This it requires special skills to be an atypical (Power) user on a Mac should not be a surprise. And the tools are there for you. So to be a typical 'power' user on a Mac is no more difficult on Windows. In some cases OS-X would be a better choice. It's a genuine certified UNIX, after all.
And they look pretty too, which is a nice bonus.
As for the topic of the thread, I think this is a perfectly valid class action. Regressing the spec of the display and not making it clear is a pretty shitty underhand thing to do.