baloo_kiev is talking about GH/share, gyverlb GH/BTC. You both have right. But it's clearly that 100TH mine has 3,5 times better price (now). You can buy 3,5 times more hashpower per 1 BTC invested. Of course let's hope that everything will be good and 1st of July we will see first hashesh 
I see you are still comparing 100TH to AM in terms of price per GH, which is not correct. Each share of ASICMINER always represents 1/400,000 of the whole company. (quote from Friedcat). A share of 100TH represents 0.2GH and no more than that. Without a vote by investors board, AM cannot sell half of their chips to a third party, like 100TH did with Bitfury.
Also, compare 100TH's price per GH to Bitfury's devices. That's 0.7 vs 0.17.
Please tell me me if I understand anything wrong.