[css-transforms] Scale property

Hi list,

Should 'scale: 2' be equivalent to 'transform: scale(2)' or 'transform:
scale(2, 1)'?

Clearly, 'scale: 2 2' should not expand to 'transform: scale3D(2, 2, 2)'.
Is it better to be inconsistent between the one value and two value cases
of the scale property, or to be inconsistent between the scale property and
the scale transform function?

Cheers,
    -Shane