If you're in the market for a 4x4, why on Earth would I test drive a car advertised as a 2WD? Using Penguin's analogy, if I'm in the market for a manual car, why on Earth would I be test driving a car advertised as automatic?
Because, reasons. The perceptive whims and needs of the consumer change, and so do the specs and capabilities of equipment in question when you examine why you have those need and discover how to fulfill those needs. There is also a bigger issue underneath between perception and communication between parties involved.
I might test drive a 2WD sports car just for kicks or information gathering later on. There is no commitment to purchase, and especially at any one particular dealer. I would have plenty of time on my hands to test drive, because I would not be test driving without spare time on my hands (I'd be renting or taxi'ing if I needed that moment). Specific to cars, there's also semi-automatic cars that allow both manual and automatic transmission. More specifically, if I were offered to test drive the new Tesla Vehicles, I would do so in a heartbeat. Sooooo want instant torque.
There is a huge gap between consumer perception, marketing, engineering, quality assurance and third party field tested specs. Ideally the consumer is well informed, and the marketed features are not deceptive, and there's tight communication between all three parties... but that's not how real life works all the time. In the case of MP ability descriptions, they can be outright false because there's been failure in communication between the marketing and engineering departments.... the people that wrote the descriptions and those that programmed the abilities, and those that tested them afterward.
There are people mad because they don't understand how things work, and expect face value to always be true. That is very simple and naive way of understanding things. While I would like an ideal world where all communication was true and no miscommunication ever happened to cause descriptions and understanding to be false, that is not how life works.
because the manufacturer told us so
Recently Nvidia had discovered an error with their marketing department mislabeled the specs of one of their high end products, and the error went undetected for about four months. There's no change in overall tested performance, but perceived specifications are less than originally advertised. Nvidia is currently in full damage control mode for brand image as certain people cried foul.
http://anandtech.com...mory-allocation
Even the Manufacturer can miscommunicate. For cars, recalls happen for parts and cars when defects are found. You may expect everything is fine and dandy, but why then do we have warranties and consumer protection laws? The element of risk is always present, and sound judgement comes from balancing risk with the total picture of needs, not from assuming everything is correct as advertised.