I tested some Ultrafire 3000mA and some Soshine 2800mA at one time.
At 0,25A They are @2500mA and not much more than 100mA more than the "true" claims on the other 2500mA cells. What stuck out was their ability to still deliver 2500mA and hold a higher voltage at 3,0A discharge, than the "true" 2500mA cells.
Maybe they have a special test where the cell is paralleled with a solar cell and thus can deliver 3000mA at a discharge of no more than 100mA around midday:shrug:
Then again some will buy an autobooster that claims 1200W peak power and weighs no more than 2lbs for under $100.
A fool and his money shall soon be parted, or in other words: "Theres one born every minute"