"You were already wrong with your comment about how the dual structure
halves the value of the shares. As someone has already mentioned, it's
merely for voting right purposes and unless you give the extra voting
right a premium value, it doesn't change your valuation-formula. "

I assume that those shares are entitled to their share of the earnings
and equity of the company. They also are not listed. The shares listed
on google finance are shown as dividing up the earnings and equity of
the company only among that class of shares. This doesn't include
those other shares, which also have a share in the company. If you
combine the number of both classes of shares outstanding, you see that
each share is entitled to less than what is shown here on google
finance. This decreases the value of the shares from what is listed
here on google finance. Its not rocket science.

"A single share structure is not always better in all circumstances."

This is true, and why I said it wasn't so.

"really, do you want a good voting structure with shitty management or
shitty voting
structure with good management?"

I didn't know those were the only two options investors had.