Linpack gives a measure of how fast the CPU can calculate a certain floating point calculations.
Quadrant measures 12 CPU functions (including floating point), memory speed, 4 types of I/O speed, 2D graphics speed, and 3 types of 3D graphics speed. These new Samsung phones have the latest memory, very fast busses, and unbelievably fast 3D graphics. So, you would expect Linpack scores on them to be similar to other 1GHz Android phones, but Quadrant scores to be significantly higher.