Wow that seems like some real shady business Ill probably look into one of these clevo's myself then. Im used to laptops not hitting the actual estimated battery life mark but honestly they have never been off by 50%!. Thanks for the heads up.
It really depends on what you're doing. I almost always have parallels running for instance which would definitely have an impact on battery life. I just unplugged, and I have chrome and a text editor open and it's giving me an estimate of five hours at full brightness, six hours at half brightness and eight hours at minimum brightness. If you try, you can definitely get good battery life out of the MBP. I was just commenting on what I consider to be "normal" usage.
It's definitely better than the Vaio SZ I purchased last year. They claimed a seven hour battery life as well, and even under very light usage I was getting between two and three. When I called to complain, they claimed the seven hour battery life was only for standby mode. I will never order another Sony laptop, regardless of what the specs say.