I hate you so much right now, shwaip, because you know (or should know) that's not true.

The studies you're thinking of are failures by Tom's Hardware that said, indeed, that a laptop ran out of battery faster than a mechanical drive - but they failed because they did more than twice the work in the same time span. They ran a looped HDD read/write test - and the SSD did work so much faster, it kept the processor busy requesting more instructions until it drained. If they had done a logical test, such as watching a video or music on a loop, which streams data at the same rate on both, you'd have seen a battery life increase.