No sense at all

"HP's new 300GB SFF drive will have, it says, 75 per cent power savings over comparable 3.5 inch 300GB capacity drives ... The 75 per cent power saving becomes a 50 per cent power saving when compared to a 3.5-inch 15K drive."

Shouldn't that be; uses 75% of the power of comparable 3.5 inch 300GB (10K) capacity drives, and 50% of the power when compared to a 3.5-inch 15K drive? Otherwise it makes no sense at all.