msup-02

Formatting of right hand side of equation should be identical to formatting of left hand side

W3C sample	WIRIS
	$${\phantom{\mathrm{fail}}\mathrm{k}}^2={\mathrm{k}}^2$$

<math xmlns="http://www.w3.org/1998/Math/MathML" display="block">
  <msup>
    <mrow>
      <mphantom>
        <mi>fail</mi>
      </mphantom>
      <mi mathvariant="normal">k</mi>
    </mrow>
    <mn>2</mn>
  </msup>
  <mo>=</mo>
  <msup>
    <mi mathvariant="normal">k</mi>
    <mn>2</mn>
  </msup>
</math>

Author: George Chavchanidze, Opera Software ASA