Apparently this reviewer is unfamiliar with the modern lineups of non-Apple manufacturers. For example, the Thinkpad T400 with nine-cell battery, which also weighs 5.5 lbs, gets 10 hours of battery life at 60% screen brightness. (The biggest difference being that the T400 has a battery that can be swapped on the go, and it costs less to get a Thinkpad of equivalent specs to a given MacBook Pro.)