I know you're NukEvil, but I can't tell if you're trolling or not.
A bare SD card being dropped from any height would survive just like your ant would. Both are not very dense compared to the air around it, and the SD card is going to tumble due to its shape. This means they have both low terminal velocity and low inertia, so there isn't a lot of energy to dissipate once it hits the ground.
Put this SD card in a phone, and now you have to deal with a connector that looks something like
http://www.digikey.com/...3D-SF/HR1941TR-ND/1786510 holding the card and sandwiched tightly against the case, circuit boards, display glass, and whatever else is inside the phone. Terminal velocity and inertia are both higher, and the components are likely to come loose or at the very least flex on impact. This could in turn flex the SD card, cracking the die of the FLASH memory or popping one of the bond wires loose. A cracked die is a lost cause, bond wires or contact pads can be attached with the right microscopy and soldering tools.