YOU paid 0.1331 USD per ICN because YOU paid in Bitcoin.
ICN was purchased using numerous currencies : BTC, ETH, LSK, USD, EUR. These were all converted to USD for the final calculations by ICONOMI.
According to the article you quoted:
"TOTAL AMOUNT RAISED (official number):
10,682,516.42 USD"That amount of USD bought 85M tokens.
The AVERAGE price per ICN over ALL FIVE CURRENCIES COLLECTED is 10,682,516.42 / 85,000,000 = 0.125676663 = 0.1257 USD per ICN.
THAT'S where I got the price 0.1257 USD per ICN.